Updated: classpath 'com.android.tools.build:gradle:0.12.2'
android.sourceSets.main.allSource   has been changed to android.sourceSets.main.java.srcDirs
see:  https://code.google.com/p/android/issues/detail?id=71174
Updated:
TARGET_SDK_VERSION=20
COMPILE_SDK_VERSION=20
BUILD_TOOLS_VERSION=20
Added: flatui,emojicon,robototextview