Update fastlane metadata files

Add V2.0.0 release note
Move/rename icon file

fastlane/metadata/android/en-US/changelogs/20000.txt

@@ -0,0 +1,26 @@
+AndrOBD V2.0.0
+==============
+
+* Update project to Android Studio 3.1
+  * Change to Gradle build system (I still hate it ...)
+  * Split  to modules:
+    * Generic library
+    * AndrOBD files
+    * Plugin framework
+
+* Added Plugin support
+  * Design description
+    https://github.com/fr3ts0n/AndrOBD/wiki/Design:---AndrOBD-extension-plugin-framework
+  * Plugin development
+    https://github.com/fr3ts0n/AndrOBD-Plugin
+  * Add plugin manager
+  * Plugins available:
+    * MqttPublisher - Publish AndrOBD OBD data to MQTT broker
+
+* GUI design rework / cleanup
+  * Use standard Android techniques for:
+    * List item selection
+    * Action menu to display selected data items
+  * Use more intuitive icons for actions
+  * Cleanup toolbar hiding
+  * Add licensing & donation info