Merge pull request #1 from gillygize/master

Put the return on both branches of the #if macro.
Fixed deprecated method
Podspec version bump
Using head for AFNetworking during development
Upgraded AFNetworking to 2.1.0
Added identifier back
Added AFNetworking license
Update README.md

clientWithBaseURL is not a method.
Merge pull request #6 from stefankendall/patch-1

Update README.md
Ignoring xccheckout
Use self instead of hardcoded class
Renamed parameter to avoid Clang documentation comment warnings
Use AFHTTPRequestOperationManager as base class for old iOS.
Allow refresh token to be nil
Podspec version bump
Merge pull request #7 from gabrielrinaldi/development

0.2.1
Fixed macro name
Update AFNetworking version in the podspec-file

Update podspec for compatibility with new (future) minor versions of the AFNetworking
Merge pull request #8 from virasio/patch-1

Update AFNetworking version in the podspec-file
Defaulting expiration of tokens to distant future /cc @irlabs