docs: Moved small section in Build your project with Gradle doc. Bug: 13767801
docs: Moved small section in Build your project with Gradle doc. Bug: 13767801

Change-Id: Ibf718f6051aabaf1120d4245ffc870fa928138be

xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base