samplestack needs the Java Client API, and samplestack for ea-2 will depend on some kind of Java snapshot or EA-2 distributable. Both of these probably can be served up as part of the github repo.
This stack overflow article http://stackoverflow.com/questions/14013644/hosting-a-maven-repository-on-github/14013645#14013645 shows how to accomplish this with maven. I'm motivated to do this, and can help get maven in line if you'd like.