Merge branch 'audio' of qagit:thisisme-android

Conflicts:
	android/ThisIsMe/AndroidManifest.xml
	android/ThisIsMe/src/com/thisisme/photomix/PMApplication.java
	android/ThisIsMe/src/com/thisisme/photomix/ui/SceneActivity.java
	android/ThisIsMe/src/com/thisisme/photomix/utils/BillingManager.java

Make a code review for Scene, Audio, InAppBilling
add gradle build script