isAuthorized is now internal and readonly on SinglySession.
Stubbed out tests for Facebook and Twitter service subclasses.
Display activitiy indicator for native authorizations.
Miscellaneous project cleanups.
More project cleanups.
Clarified documentation regarding Facebook scopes with native authorization (closes #84).
Do not call the accountForTwitterAuthorization delegate on the main queue.
Remove status indication as a responsibility of SinglyService by posting a notification when authorization is in process.
The `singlyServiceDidFail:` delegate method is now called when the user aborts
  a Facebook or Twitter native request (closes #89).
Check for method definitions before calling delegate methods in SinglyActionSheet.
Raise notification earlier in the native authorization process.
Incremented version number.
Fixed formatting of URLs generated by SinglyRequest to address issues with proxying requests to services.
Bumped version number.
Fixed Facebook application-based authorization when multiple URL schemes are registered.

This also adds tests to application-based authorization detection for
Facebook and simplifies the workflow a bit.
Validate that the app delegate implements the correct method for Facebook app-based authorization.

Also displays a more informative message to the developer in the
console when the app is not properly configured for app-based
authorization.
Renamed clientID on SinglyService to clientIdentifier.
Incremented version number.

Incrementing to 1.3 since the next release will break some APIs and
assumptions.
Removed unused sharing code.
Updated podspec for removed sharing code.