Attempt to update to Facebook SDK 3.8.0

Started from @mokesmokes pull request https://github.com/appcelerator/titanium_modules/pull/123. (SDK 3.5.3).

This is a first attempt to update to current Facebook iOS SDK. (3.8.0)
https://developers.facebook.com/docs/ios/change-log-3.x/
Basics features seems to be working (Login, Logout, Authorize etc..)