Fix issue #3 - race between $facebook.api and first auth response

Plunker demonstrating the fix. Note that I had to add missing $apply calls in order for this to work.

http://plnkr.co/edit/jT5R4Bblervwmu3W9hzg?p=preview

I'm going to file a new issue for the missing $apply calls.

Can you please review this @AlmogBaku