I'm also experiencing A similar problem.
I have figured this out, so if you like, you can send me a PM and tell me exactly what you are having problems with and I can help you out
My issue I was experiencing when I started this thread was continuous looping (as Ashley pointed out) and the fact that I was not doing google play services correctly in Google's Developer console. All my issues have been resolved and if you need help, shoot me a message and we can get it working for ya