Github

So I've been looking for some collaboration options for Stencyl and found this topic:

http://community.stencyl.com/index.php/topic,47670.msg264605.html

Are the people in there saying that it is possible to use Github to collaborate on Stencyl, or am I being misled? mebloo's posts are what's confusing me mostly. If it's true that you can collaborate via Github, can someone give me some pointers on how to go about it, and what limitations it has?

Thanks a ton, guys!