Just put an Android project under git (beanstalk) version control via the command line (mac terminal). Next step is to set up exclusions.
To those
In Addition, if you use IDEA's IntelliJ, and you build Artifacts (and you should), then you might want to add:
out/
(that's where Artifacts are built by default).
And if you don't want to share your IntelliJ project stuff ignore
.idea/