Gradle

[精++]Gradle 

https://github.com/rujews/android-tech-docs/blob/master/new-build-system/user-guide/README.md

[good]How to create a release signed apk file using Gradle?

http://stackoverflow.com/questions/18328730/how-to-create-a-release-signed-apk-file-using-gradle

http://qa.helplib.com/868849