MycroftOS: Implementation of a very first initial bootable version

- Add Buildroot patches to downgrade / upgrade package dependencies
  in line with the Mycroft A.I. software stack requirements.
- Add buildroot additional package dependencies in line with the
  Mycroft A.I. software stack requirements.
- Update rpi3 defconfig file.
- Implement initial root_fs overlay filestructure.
- Addition of some quick and dirty helper scripts.
- Update of README to reflect these changes.

buildroot-external/package/python-adapt-parser/Config.in

@@ -0,0 +1,8 @@
+config BR2_PACKAGE_PYTHON_ADAPT_PARSER
+	bool "python-adapt-parser"
+	select BR2_PACKAGE_PYTHON_PYEE # runtime
+	select BR2_PACKAGE_PYTHON_SIX # runtime
+	help
+	  A text-to-intent parsing framework.
+
+	  https://github.com/MycroftAI/adapt

buildroot-external/package/python-adapt-parser/python-adapt-parser.hash

@@ -0,0 +1,3 @@
+# md5, sha256 from https://pypi.org/pypi/adapt-parser/json
+md5	f415b363a15c3077a9624280a5bc2d37  adapt-parser-0.3.0.tar.gz
+sha256	9445c9be4fcf3c519d1fbc605ea289349e11c2eb581db72242b61d12cc4d337f  adapt-parser-0.3.0.tar.gz

buildroot-external/package/python-adapt-parser/python-adapt-parser.mk

@@ -0,0 +1,12 @@
+################################################################################
+#
+# python-adapt-parser
+#
+################################################################################
+
+PYTHON_ADAPT_PARSER_VERSION = 0.3.0
+PYTHON_ADAPT_PARSER_SOURCE = adapt-parser-$(PYTHON_ADAPT_PARSER_VERSION).tar.gz
+PYTHON_ADAPT_PARSER_SITE = https://files.pythonhosted.org/packages/36/a4/3ef82c754a8fb079a98d0adb66be1e3dc7a42d6faafdf1f106924a48c352
+PYTHON_ADAPT_PARSER_SETUP_TYPE = setuptools
+
+$(eval $(python-package))