Use AF2OAuth1Client source
Remove old tests
Uncrustify header
Update XNGOAuthTokenTests
Update travis script
Remove NSParameterAsserts
Use AFNetworking 2.0 or higher and bump version
Add XNGOAuth1Client tests
Uncrustify all the things
Add license header
Merge pull request #6 from xing/use_af2oauth1client

Use API borrowed from AF2OAuth1Client