bug fix for facebook response

I started using engineauth from last week. This helps me very well.
However I found some bugs. Please let me fix them.

I'm using facebook-login but sometimes it works well but sometime doesn't.
I found problem in libs/oauth2client/client.py

I think someone add patch for this library like below.
https://code.google.com/p/google-api-python-client/issues/detail?id=36

In response_decoder(), body will be "access_token=xxx&expire=xxx".
I expect this method returns dict object like "{access_toke: xxx, expire:xxx}", but it returns only one property, access_token or expire. I think wrong indent is causing this.

Thanks