diff --git a/.gitignore b/.gitignore
index 39d9262b..cfd6b30f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -34,10 +34,7 @@ captures/
 
 # Intellij
 *.iml
-.idea/workspace.xml
-.idea/libraries
-.idea/encodings.xml
-.idea/misc.xml
+.idea/
 
 # Keystore files
 *.jks
diff --git a/.idea/.name b/.idea/.name
deleted file mode 100644
index 4dce99a7..00000000
--- a/.idea/.name
+++ /dev/null
@@ -1 +0,0 @@
-ultrasonic
\ No newline at end of file
diff --git a/.idea/compiler.xml b/.idea/compiler.xml
deleted file mode 100644
index 96cc43ef..00000000
--- a/.idea/compiler.xml
+++ /dev/null
@@ -1,22 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="CompilerConfiguration">
-    <resourceExtensions />
-    <wildcardResourcePatterns>
-      <entry name="!?*.java" />
-      <entry name="!?*.form" />
-      <entry name="!?*.class" />
-      <entry name="!?*.groovy" />
-      <entry name="!?*.scala" />
-      <entry name="!?*.flex" />
-      <entry name="!?*.kt" />
-      <entry name="!?*.clj" />
-      <entry name="!?*.aj" />
-    </wildcardResourcePatterns>
-    <annotationProcessing>
-      <profile default="true" name="Default" enabled="false">
-        <processorPath useClasspath="true" />
-      </profile>
-    </annotationProcessing>
-  </component>
-</project>
\ No newline at end of file
diff --git a/.idea/copyright/profiles_settings.xml b/.idea/copyright/profiles_settings.xml
deleted file mode 100644
index e7bedf33..00000000
--- a/.idea/copyright/profiles_settings.xml
+++ /dev/null
@@ -1,3 +0,0 @@
-<component name="CopyrightManager">
-  <settings default="" />
-</component>
\ No newline at end of file
diff --git a/.idea/gradle.xml b/.idea/gradle.xml
deleted file mode 100644
index a0903557..00000000
--- a/.idea/gradle.xml
+++ /dev/null
@@ -1,22 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="GradleSettings">
-    <option name="linkedExternalProjectsSettings">
-      <GradleProjectSettings>
-        <option name="distributionType" value="DEFAULT_WRAPPED" />
-        <option name="externalProjectPath" value="$PROJECT_DIR$" />
-        <option name="gradleJvm" value="1.8" />
-        <option name="modules">
-          <set>
-            <option value="$PROJECT_DIR$" />
-            <option value="$PROJECT_DIR$/library" />
-            <option value="$PROJECT_DIR$/menudrawer" />
-            <option value="$PROJECT_DIR$/pulltorefresh" />
-            <option value="$PROJECT_DIR$/ultrasonic" />
-          </set>
-        </option>
-        <option name="resolveModulePerSourceSet" value="false" />
-      </GradleProjectSettings>
-    </option>
-  </component>
-</project>
\ No newline at end of file
diff --git a/.idea/modules.xml b/.idea/modules.xml
deleted file mode 100644
index 6cd60c52..00000000
--- a/.idea/modules.xml
+++ /dev/null
@@ -1,12 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="ProjectModuleManager">
-    <modules>
-      <module fileurl="file://$PROJECT_DIR$/library/library.iml" filepath="$PROJECT_DIR$/library/library.iml" />
-      <module fileurl="file://$PROJECT_DIR$/menudrawer/menudrawer.iml" filepath="$PROJECT_DIR$/menudrawer/menudrawer.iml" />
-      <module fileurl="file://$PROJECT_DIR$/pulltorefresh/pulltorefresh.iml" filepath="$PROJECT_DIR$/pulltorefresh/pulltorefresh.iml" />
-      <module fileurl="file://$PROJECT_DIR$/ultrasonic.iml" filepath="$PROJECT_DIR$/ultrasonic.iml" />
-      <module fileurl="file://$PROJECT_DIR$/ultrasonic/ultrasonic-ultrasonic.iml" filepath="$PROJECT_DIR$/ultrasonic/ultrasonic-ultrasonic.iml" />
-    </modules>
-  </component>
-</project>
\ No newline at end of file
diff --git a/.idea/runConfigurations.xml b/.idea/runConfigurations.xml
deleted file mode 100644
index 7f68460d..00000000
--- a/.idea/runConfigurations.xml
+++ /dev/null
@@ -1,12 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="RunConfigurationProducerService">
-    <option name="ignoredProducers">
-      <set>
-        <option value="org.jetbrains.plugins.gradle.execution.test.runner.AllInPackageGradleConfigurationProducer" />
-        <option value="org.jetbrains.plugins.gradle.execution.test.runner.TestClassGradleConfigurationProducer" />
-        <option value="org.jetbrains.plugins.gradle.execution.test.runner.TestMethodGradleConfigurationProducer" />
-      </set>
-    </option>
-  </component>
-</project>
\ No newline at end of file
diff --git a/.idea/vcs.xml b/.idea/vcs.xml
deleted file mode 100644
index 94a25f7f..00000000
--- a/.idea/vcs.xml
+++ /dev/null
@@ -1,6 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="VcsDirectoryMappings">
-    <mapping directory="$PROJECT_DIR$" vcs="Git" />
-  </component>
-</project>
\ No newline at end of file
diff --git a/library/.gitignore b/library/.gitignore
index 796b96d1..e8fa30f8 100644
--- a/library/.gitignore
+++ b/library/.gitignore
@@ -1 +1,2 @@
 /build
+*.iml
diff --git a/library/library.iml b/library/library.iml
deleted file mode 100644
index cb2bdd5d..00000000
--- a/library/library.iml
+++ /dev/null
@@ -1,110 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<module external.linked.project.id=":library" external.linked.project.path="$MODULE_DIR$" external.root.project.path="$MODULE_DIR$/.." external.system.id="GRADLE" external.system.module.group="ultrasonic" external.system.module.version="unspecified" type="JAVA_MODULE" version="4">
-  <component name="FacetManager">
-    <facet type="android-gradle" name="Android-Gradle">
-      <configuration>
-        <option name="GRADLE_PROJECT_PATH" value=":library" />
-      </configuration>
-    </facet>
-    <facet type="android" name="Android">
-      <configuration>
-        <option name="SELECTED_BUILD_VARIANT" value="debug" />
-        <option name="SELECTED_TEST_ARTIFACT" value="_android_test_" />
-        <option name="ASSEMBLE_TASK_NAME" value="assembleDebug" />
-        <option name="COMPILE_JAVA_TASK_NAME" value="compileDebugSources" />
-        <afterSyncTasks>
-          <task>generateDebugSources</task>
-        </afterSyncTasks>
-        <option name="ALLOW_USER_CONFIGURATION" value="false" />
-        <option name="MANIFEST_FILE_RELATIVE_PATH" value="/src/main/AndroidManifest.xml" />
-        <option name="RES_FOLDER_RELATIVE_PATH" value="/src/main/res" />
-        <option name="RES_FOLDERS_RELATIVE_PATH" value="file://$MODULE_DIR$/src/main/res" />
-        <option name="ASSETS_FOLDER_RELATIVE_PATH" value="/src/main/assets" />
-        <option name="LIBRARY_PROJECT" value="true" />
-      </configuration>
-    </facet>
-  </component>
-  <component name="NewModuleRootManager" LANGUAGE_LEVEL="JDK_1_7" inherit-compiler-output="false">
-    <output url="file://$MODULE_DIR$/build/intermediates/classes/debug" />
-    <output-test url="file://$MODULE_DIR$/build/intermediates/classes/test/debug" />
-    <exclude-output />
-    <content url="file://$MODULE_DIR$">
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/source/r/debug" isTestSource="false" generated="true" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/source/aidl/debug" isTestSource="false" generated="true" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/source/buildConfig/debug" isTestSource="false" generated="true" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/source/rs/debug" isTestSource="false" generated="true" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/source/apt/debug" isTestSource="false" generated="true" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/res/rs/debug" type="java-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/res/resValues/debug" type="java-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/source/r/androidTest/debug" isTestSource="true" generated="true" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/source/aidl/androidTest/debug" isTestSource="true" generated="true" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/source/buildConfig/androidTest/debug" isTestSource="true" generated="true" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/source/rs/androidTest/debug" isTestSource="true" generated="true" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/source/apt/androidTest/debug" isTestSource="true" generated="true" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/res/rs/androidTest/debug" type="java-test-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/res/resValues/androidTest/debug" type="java-test-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/debug/res" type="java-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/debug/resources" type="java-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/debug/assets" type="java-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/debug/aidl" isTestSource="false" />
-      <sourceFolder url="file://$MODULE_DIR$/src/debug/java" isTestSource="false" />
-      <sourceFolder url="file://$MODULE_DIR$/src/debug/jni" isTestSource="false" />
-      <sourceFolder url="file://$MODULE_DIR$/src/debug/rs" isTestSource="false" />
-      <sourceFolder url="file://$MODULE_DIR$/src/debug/shaders" isTestSource="false" />
-      <sourceFolder url="file://$MODULE_DIR$/src/testDebug/res" type="java-test-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/testDebug/resources" type="java-test-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/testDebug/assets" type="java-test-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/testDebug/aidl" isTestSource="true" />
-      <sourceFolder url="file://$MODULE_DIR$/src/testDebug/java" isTestSource="true" />
-      <sourceFolder url="file://$MODULE_DIR$/src/testDebug/jni" isTestSource="true" />
-      <sourceFolder url="file://$MODULE_DIR$/src/testDebug/rs" isTestSource="true" />
-      <sourceFolder url="file://$MODULE_DIR$/src/testDebug/shaders" isTestSource="true" />
-      <sourceFolder url="file://$MODULE_DIR$/src/main/res" type="java-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/main/resources" type="java-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/main/assets" type="java-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/main/aidl" isTestSource="false" />
-      <sourceFolder url="file://$MODULE_DIR$/src/main/java" isTestSource="false" />
-      <sourceFolder url="file://$MODULE_DIR$/src/main/jni" isTestSource="false" />
-      <sourceFolder url="file://$MODULE_DIR$/src/main/rs" isTestSource="false" />
-      <sourceFolder url="file://$MODULE_DIR$/src/main/shaders" isTestSource="false" />
-      <sourceFolder url="file://$MODULE_DIR$/src/androidTest/res" type="java-test-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/androidTest/resources" type="java-test-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/androidTest/assets" type="java-test-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/androidTest/aidl" isTestSource="true" />
-      <sourceFolder url="file://$MODULE_DIR$/src/androidTest/java" isTestSource="true" />
-      <sourceFolder url="file://$MODULE_DIR$/src/androidTest/jni" isTestSource="true" />
-      <sourceFolder url="file://$MODULE_DIR$/src/androidTest/rs" isTestSource="true" />
-      <sourceFolder url="file://$MODULE_DIR$/src/androidTest/shaders" isTestSource="true" />
-      <sourceFolder url="file://$MODULE_DIR$/src/test/res" type="java-test-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/test/resources" type="java-test-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/test/assets" type="java-test-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/test/aidl" isTestSource="true" />
-      <sourceFolder url="file://$MODULE_DIR$/src/test/java" isTestSource="true" />
-      <sourceFolder url="file://$MODULE_DIR$/src/test/jni" isTestSource="true" />
-      <sourceFolder url="file://$MODULE_DIR$/src/test/rs" isTestSource="true" />
-      <sourceFolder url="file://$MODULE_DIR$/src/test/shaders" isTestSource="true" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/annotations" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/blame" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/bundles" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/classes" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/exploded-aar/com.android.support/support-v4/22.2.1/jars" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/incremental" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/incremental-safeguard" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/jniLibs" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/lint" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/manifests" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/res" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/rs" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/shaders" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/symbols" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/transforms" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/typedefs.txt" />
-      <excludeFolder url="file://$MODULE_DIR$/build/outputs" />
-      <excludeFolder url="file://$MODULE_DIR$/build/tmp" />
-    </content>
-    <orderEntry type="jdk" jdkName="Android API 22 Platform" jdkType="Android SDK" />
-    <orderEntry type="sourceFolder" forTests="false" />
-    <orderEntry type="library" exported="" name="support-v4-22.2.1" level="project" />
-    <orderEntry type="library" exported="" name="support-annotations-22.2.1" level="project" />
-  </component>
-</module>
\ No newline at end of file
diff --git a/menudrawer/.gitignore b/menudrawer/.gitignore
index 796b96d1..e8fa30f8 100644
--- a/menudrawer/.gitignore
+++ b/menudrawer/.gitignore
@@ -1 +1,2 @@
 /build
+*.iml
diff --git a/menudrawer/menudrawer.iml b/menudrawer/menudrawer.iml
deleted file mode 100644
index a15c1cd8..00000000
--- a/menudrawer/menudrawer.iml
+++ /dev/null
@@ -1,105 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<module external.linked.project.id=":menudrawer" external.linked.project.path="$MODULE_DIR$" external.root.project.path="$MODULE_DIR$/.." external.system.id="GRADLE" external.system.module.group="ultrasonic" external.system.module.version="unspecified" type="JAVA_MODULE" version="4">
-  <component name="FacetManager">
-    <facet type="android-gradle" name="Android-Gradle">
-      <configuration>
-        <option name="GRADLE_PROJECT_PATH" value=":menudrawer" />
-      </configuration>
-    </facet>
-    <facet type="android" name="Android">
-      <configuration>
-        <option name="SELECTED_BUILD_VARIANT" value="debug" />
-        <option name="SELECTED_TEST_ARTIFACT" value="_android_test_" />
-        <option name="ASSEMBLE_TASK_NAME" value="assembleDebug" />
-        <option name="COMPILE_JAVA_TASK_NAME" value="compileDebugSources" />
-        <afterSyncTasks>
-          <task>generateDebugSources</task>
-        </afterSyncTasks>
-        <option name="ALLOW_USER_CONFIGURATION" value="false" />
-        <option name="MANIFEST_FILE_RELATIVE_PATH" value="/src/main/AndroidManifest.xml" />
-        <option name="RES_FOLDER_RELATIVE_PATH" value="/src/main/res" />
-        <option name="RES_FOLDERS_RELATIVE_PATH" value="file://$MODULE_DIR$/src/main/res" />
-        <option name="ASSETS_FOLDER_RELATIVE_PATH" value="/src/main/assets" />
-        <option name="LIBRARY_PROJECT" value="true" />
-      </configuration>
-    </facet>
-  </component>
-  <component name="NewModuleRootManager" LANGUAGE_LEVEL="JDK_1_7" inherit-compiler-output="false">
-    <output url="file://$MODULE_DIR$/build/intermediates/classes/debug" />
-    <output-test url="file://$MODULE_DIR$/build/intermediates/classes/test/debug" />
-    <exclude-output />
-    <content url="file://$MODULE_DIR$">
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/source/r/debug" isTestSource="false" generated="true" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/source/aidl/debug" isTestSource="false" generated="true" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/source/buildConfig/debug" isTestSource="false" generated="true" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/source/rs/debug" isTestSource="false" generated="true" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/source/apt/debug" isTestSource="false" generated="true" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/res/rs/debug" type="java-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/res/resValues/debug" type="java-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/source/r/androidTest/debug" isTestSource="true" generated="true" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/source/aidl/androidTest/debug" isTestSource="true" generated="true" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/source/buildConfig/androidTest/debug" isTestSource="true" generated="true" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/source/rs/androidTest/debug" isTestSource="true" generated="true" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/source/apt/androidTest/debug" isTestSource="true" generated="true" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/res/rs/androidTest/debug" type="java-test-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/res/resValues/androidTest/debug" type="java-test-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/debug/res" type="java-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/debug/resources" type="java-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/debug/assets" type="java-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/debug/aidl" isTestSource="false" />
-      <sourceFolder url="file://$MODULE_DIR$/src/debug/java" isTestSource="false" />
-      <sourceFolder url="file://$MODULE_DIR$/src/debug/jni" isTestSource="false" />
-      <sourceFolder url="file://$MODULE_DIR$/src/debug/rs" isTestSource="false" />
-      <sourceFolder url="file://$MODULE_DIR$/src/debug/shaders" isTestSource="false" />
-      <sourceFolder url="file://$MODULE_DIR$/src/testDebug/res" type="java-test-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/testDebug/resources" type="java-test-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/testDebug/assets" type="java-test-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/testDebug/aidl" isTestSource="true" />
-      <sourceFolder url="file://$MODULE_DIR$/src/testDebug/java" isTestSource="true" />
-      <sourceFolder url="file://$MODULE_DIR$/src/testDebug/jni" isTestSource="true" />
-      <sourceFolder url="file://$MODULE_DIR$/src/testDebug/rs" isTestSource="true" />
-      <sourceFolder url="file://$MODULE_DIR$/src/testDebug/shaders" isTestSource="true" />
-      <sourceFolder url="file://$MODULE_DIR$/src/main/res" type="java-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/main/resources" type="java-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/main/assets" type="java-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/main/aidl" isTestSource="false" />
-      <sourceFolder url="file://$MODULE_DIR$/src/main/java" isTestSource="false" />
-      <sourceFolder url="file://$MODULE_DIR$/src/main/jni" isTestSource="false" />
-      <sourceFolder url="file://$MODULE_DIR$/src/main/rs" isTestSource="false" />
-      <sourceFolder url="file://$MODULE_DIR$/src/main/shaders" isTestSource="false" />
-      <sourceFolder url="file://$MODULE_DIR$/src/test/res" type="java-test-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/test/resources" type="java-test-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/test/assets" type="java-test-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/test/aidl" isTestSource="true" />
-      <sourceFolder url="file://$MODULE_DIR$/src/test/java" isTestSource="true" />
-      <sourceFolder url="file://$MODULE_DIR$/src/test/jni" isTestSource="true" />
-      <sourceFolder url="file://$MODULE_DIR$/src/test/rs" isTestSource="true" />
-      <sourceFolder url="file://$MODULE_DIR$/src/test/shaders" isTestSource="true" />
-      <sourceFolder url="file://$MODULE_DIR$/src/androidTest/res" type="java-test-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/androidTest/resources" type="java-test-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/androidTest/assets" type="java-test-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/androidTest/aidl" isTestSource="true" />
-      <sourceFolder url="file://$MODULE_DIR$/src/androidTest/java" isTestSource="true" />
-      <sourceFolder url="file://$MODULE_DIR$/src/androidTest/jni" isTestSource="true" />
-      <sourceFolder url="file://$MODULE_DIR$/src/androidTest/rs" isTestSource="true" />
-      <sourceFolder url="file://$MODULE_DIR$/src/androidTest/shaders" isTestSource="true" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/blame" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/bundles" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/classes" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/incremental" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/incremental-safeguard" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/jniLibs" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/lint" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/manifests" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/res" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/rs" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/shaders" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/symbols" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/transforms" />
-      <excludeFolder url="file://$MODULE_DIR$/build/outputs" />
-      <excludeFolder url="file://$MODULE_DIR$/build/tmp" />
-    </content>
-    <orderEntry type="jdk" jdkName="Android API 22 Platform" jdkType="Android SDK" />
-    <orderEntry type="sourceFolder" forTests="false" />
-  </component>
-</module>
\ No newline at end of file
diff --git a/pulltorefresh/.gitignore b/pulltorefresh/.gitignore
index 796b96d1..e8fa30f8 100644
--- a/pulltorefresh/.gitignore
+++ b/pulltorefresh/.gitignore
@@ -1 +1,2 @@
 /build
+*.iml
diff --git a/pulltorefresh/pulltorefresh.iml b/pulltorefresh/pulltorefresh.iml
deleted file mode 100644
index d93f599f..00000000
--- a/pulltorefresh/pulltorefresh.iml
+++ /dev/null
@@ -1,105 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<module external.linked.project.id=":pulltorefresh" external.linked.project.path="$MODULE_DIR$" external.root.project.path="$MODULE_DIR$/.." external.system.id="GRADLE" external.system.module.group="ultrasonic" external.system.module.version="unspecified" type="JAVA_MODULE" version="4">
-  <component name="FacetManager">
-    <facet type="android-gradle" name="Android-Gradle">
-      <configuration>
-        <option name="GRADLE_PROJECT_PATH" value=":pulltorefresh" />
-      </configuration>
-    </facet>
-    <facet type="android" name="Android">
-      <configuration>
-        <option name="SELECTED_BUILD_VARIANT" value="debug" />
-        <option name="SELECTED_TEST_ARTIFACT" value="_android_test_" />
-        <option name="ASSEMBLE_TASK_NAME" value="assembleDebug" />
-        <option name="COMPILE_JAVA_TASK_NAME" value="compileDebugSources" />
-        <afterSyncTasks>
-          <task>generateDebugSources</task>
-        </afterSyncTasks>
-        <option name="ALLOW_USER_CONFIGURATION" value="false" />
-        <option name="MANIFEST_FILE_RELATIVE_PATH" value="/src/main/AndroidManifest.xml" />
-        <option name="RES_FOLDER_RELATIVE_PATH" value="/src/main/res" />
-        <option name="RES_FOLDERS_RELATIVE_PATH" value="file://$MODULE_DIR$/src/main/res" />
-        <option name="ASSETS_FOLDER_RELATIVE_PATH" value="/src/main/assets" />
-        <option name="LIBRARY_PROJECT" value="true" />
-      </configuration>
-    </facet>
-  </component>
-  <component name="NewModuleRootManager" LANGUAGE_LEVEL="JDK_1_7" inherit-compiler-output="false">
-    <output url="file://$MODULE_DIR$/build/intermediates/classes/debug" />
-    <output-test url="file://$MODULE_DIR$/build/intermediates/classes/test/debug" />
-    <exclude-output />
-    <content url="file://$MODULE_DIR$">
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/source/r/debug" isTestSource="false" generated="true" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/source/aidl/debug" isTestSource="false" generated="true" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/source/buildConfig/debug" isTestSource="false" generated="true" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/source/rs/debug" isTestSource="false" generated="true" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/source/apt/debug" isTestSource="false" generated="true" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/res/rs/debug" type="java-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/res/resValues/debug" type="java-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/source/r/androidTest/debug" isTestSource="true" generated="true" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/source/aidl/androidTest/debug" isTestSource="true" generated="true" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/source/buildConfig/androidTest/debug" isTestSource="true" generated="true" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/source/rs/androidTest/debug" isTestSource="true" generated="true" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/source/apt/androidTest/debug" isTestSource="true" generated="true" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/res/rs/androidTest/debug" type="java-test-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/res/resValues/androidTest/debug" type="java-test-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/debug/res" type="java-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/debug/resources" type="java-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/debug/assets" type="java-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/debug/aidl" isTestSource="false" />
-      <sourceFolder url="file://$MODULE_DIR$/src/debug/java" isTestSource="false" />
-      <sourceFolder url="file://$MODULE_DIR$/src/debug/jni" isTestSource="false" />
-      <sourceFolder url="file://$MODULE_DIR$/src/debug/rs" isTestSource="false" />
-      <sourceFolder url="file://$MODULE_DIR$/src/debug/shaders" isTestSource="false" />
-      <sourceFolder url="file://$MODULE_DIR$/src/testDebug/res" type="java-test-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/testDebug/resources" type="java-test-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/testDebug/assets" type="java-test-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/testDebug/aidl" isTestSource="true" />
-      <sourceFolder url="file://$MODULE_DIR$/src/testDebug/java" isTestSource="true" />
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-      <sourceFolder url="file://$MODULE_DIR$/src/testDebug/rs" isTestSource="true" />
-      <sourceFolder url="file://$MODULE_DIR$/src/testDebug/shaders" isTestSource="true" />
-      <sourceFolder url="file://$MODULE_DIR$/src/main/res" type="java-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/main/resources" type="java-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/main/assets" type="java-resource" />
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-      <sourceFolder url="file://$MODULE_DIR$/src/main/java" isTestSource="false" />
-      <sourceFolder url="file://$MODULE_DIR$/src/main/jni" isTestSource="false" />
-      <sourceFolder url="file://$MODULE_DIR$/src/main/rs" isTestSource="false" />
-      <sourceFolder url="file://$MODULE_DIR$/src/main/shaders" isTestSource="false" />
-      <sourceFolder url="file://$MODULE_DIR$/src/androidTest/res" type="java-test-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/androidTest/resources" type="java-test-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/androidTest/assets" type="java-test-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/androidTest/aidl" isTestSource="true" />
-      <sourceFolder url="file://$MODULE_DIR$/src/androidTest/java" isTestSource="true" />
-      <sourceFolder url="file://$MODULE_DIR$/src/androidTest/jni" isTestSource="true" />
-      <sourceFolder url="file://$MODULE_DIR$/src/androidTest/rs" isTestSource="true" />
-      <sourceFolder url="file://$MODULE_DIR$/src/androidTest/shaders" isTestSource="true" />
-      <sourceFolder url="file://$MODULE_DIR$/src/test/res" type="java-test-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/test/resources" type="java-test-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/test/assets" type="java-test-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/test/aidl" isTestSource="true" />
-      <sourceFolder url="file://$MODULE_DIR$/src/test/java" isTestSource="true" />
-      <sourceFolder url="file://$MODULE_DIR$/src/test/jni" isTestSource="true" />
-      <sourceFolder url="file://$MODULE_DIR$/src/test/rs" isTestSource="true" />
-      <sourceFolder url="file://$MODULE_DIR$/src/test/shaders" isTestSource="true" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/blame" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/bundles" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/classes" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/incremental" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/incremental-safeguard" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/jniLibs" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/lint" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/manifests" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/res" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/rs" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/shaders" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/symbols" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/transforms" />
-      <excludeFolder url="file://$MODULE_DIR$/build/outputs" />
-      <excludeFolder url="file://$MODULE_DIR$/build/tmp" />
-    </content>
-    <orderEntry type="jdk" jdkName="Android API 22 Platform" jdkType="Android SDK" />
-    <orderEntry type="sourceFolder" forTests="false" />
-  </component>
-</module>
\ No newline at end of file
diff --git a/ultrasonic/.gitignore b/ultrasonic/.gitignore
index 796b96d1..e8fa30f8 100644
--- a/ultrasonic/.gitignore
+++ b/ultrasonic/.gitignore
@@ -1 +1,2 @@
 /build
+*.iml
diff --git a/ultrasonic/ultrasonic-ultrasonic.iml b/ultrasonic/ultrasonic-ultrasonic.iml
deleted file mode 100644
index 04839edb..00000000
--- a/ultrasonic/ultrasonic-ultrasonic.iml
+++ /dev/null
@@ -1,114 +0,0 @@
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-<module external.linked.project.id=":ultrasonic" external.linked.project.path="$MODULE_DIR$" external.root.project.path="$MODULE_DIR$/.." external.system.id="GRADLE" external.system.module.group="ultrasonic" external.system.module.version="unspecified" type="JAVA_MODULE" version="4">
-  <component name="FacetManager">
-    <facet type="android-gradle" name="Android-Gradle">
-      <configuration>
-        <option name="GRADLE_PROJECT_PATH" value=":ultrasonic" />
-      </configuration>
-    </facet>
-    <facet type="android" name="Android">
-      <configuration>
-        <option name="SELECTED_BUILD_VARIANT" value="debug" />
-        <option name="SELECTED_TEST_ARTIFACT" value="_android_test_" />
-        <option name="ASSEMBLE_TASK_NAME" value="assembleDebug" />
-        <option name="COMPILE_JAVA_TASK_NAME" value="compileDebugSources" />
-        <afterSyncTasks>
-          <task>generateDebugSources</task>
-        </afterSyncTasks>
-        <option name="ALLOW_USER_CONFIGURATION" value="false" />
-        <option name="MANIFEST_FILE_RELATIVE_PATH" value="/src/main/AndroidManifest.xml" />
-        <option name="RES_FOLDER_RELATIVE_PATH" value="/src/main/res" />
-        <option name="RES_FOLDERS_RELATIVE_PATH" value="file://$MODULE_DIR$/src/main/res" />
-        <option name="ASSETS_FOLDER_RELATIVE_PATH" value="/src/main/assets" />
-      </configuration>
-    </facet>
-  </component>
-  <component name="NewModuleRootManager" LANGUAGE_LEVEL="JDK_1_7" inherit-compiler-output="false">
-    <output url="file://$MODULE_DIR$/build/intermediates/classes/debug" />
-    <output-test url="file://$MODULE_DIR$/build/intermediates/classes/test/debug" />
-    <exclude-output />
-    <content url="file://$MODULE_DIR$">
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/source/r/debug" isTestSource="false" generated="true" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/source/aidl/debug" isTestSource="false" generated="true" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/source/buildConfig/debug" isTestSource="false" generated="true" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/source/rs/debug" isTestSource="false" generated="true" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/source/apt/debug" isTestSource="false" generated="true" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/res/rs/debug" type="java-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/res/resValues/debug" type="java-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/source/r/androidTest/debug" isTestSource="true" generated="true" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/source/aidl/androidTest/debug" isTestSource="true" generated="true" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/source/buildConfig/androidTest/debug" isTestSource="true" generated="true" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/source/rs/androidTest/debug" isTestSource="true" generated="true" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/source/apt/androidTest/debug" isTestSource="true" generated="true" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/res/rs/androidTest/debug" type="java-test-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/res/resValues/androidTest/debug" type="java-test-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/debug/res" type="java-resource" />
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-      <sourceFolder url="file://$MODULE_DIR$/src/debug/assets" type="java-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/debug/aidl" isTestSource="false" />
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-      <sourceFolder url="file://$MODULE_DIR$/src/debug/jni" isTestSource="false" />
-      <sourceFolder url="file://$MODULE_DIR$/src/debug/rs" isTestSource="false" />
-      <sourceFolder url="file://$MODULE_DIR$/src/debug/shaders" isTestSource="false" />
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-      <sourceFolder url="file://$MODULE_DIR$/src/testDebug/assets" type="java-test-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/testDebug/aidl" isTestSource="true" />
-      <sourceFolder url="file://$MODULE_DIR$/src/testDebug/java" isTestSource="true" />
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-      <sourceFolder url="file://$MODULE_DIR$/src/testDebug/shaders" isTestSource="true" />
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-    <orderEntry type="library" exported="" name="design-22.2.1" level="project" />
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-    <orderEntry type="module" module-name="menudrawer" exported="" />
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\ No newline at end of file