Updated .gitignore with latest from Xamarin repo and removed Android Resource.designer.cs file (#781)

* Updated .gitignore with latest from Xamarin repo and removed Android Resource.designer.cs file

* didn't mean to leave vscode settings line in

.gitignore

@@ -1,15 +1,28 @@
 ## Ignore Visual Studio temporary files, build results, and
 ## files generated by popular Visual Studio add-ons.
 
+# Visual Studio (>=2015) project-specific, machine local files
+.vs/
+
+# JetBrains Rider project-specific, machine local files
+.idea
+
 # User-specific files
 *.suo
 *.user
 *.userosscache
 *.sln.docstates
-
-# User-specific files (MonoDevelop/Xamarin Studio)
 *.userprefs
 
+# ignore Xamarin.Android Resource.Designer.cs files
+**/*.Droid/**/[Rr]esource.[Dd]esigner.cs
+**/*.Android/**/[Rr]esource.[Dd]esigner.cs
+**/Android/**/[Rr]esource.[Dd]esigner.cs
+**/Droid/**/[Rr]esource.[Dd]esigner.cs
+
+# Xamarin Components
+Components/
+
 # Build results
 [Dd]ebug/
 [Dd]ebugPublic/
@@ -22,9 +35,6 @@ bld/
 [Bb]in/
 [Oo]bj/
 
-# Visual Studo 2015 cache/options directory
-.vs/
-
 # MSTest test Results
 [Tt]est[Rr]esult*/
 [Bb]uild[Ll]og.*