* Add example code to overview.
* Move <RKRequestDelegate> implementation detail to RKOAuthClient.m to clean up documentation
* Add missing documentation to all properties and methods.
* Rearrange sections for documentation purposes.
* Format blocks of documentation to match the project standard.
* Cleanup spacing in @property lines.
* Remove delegate assignment in initializers to be consistent with the rest of the project.
* Fix spec instances where the initializer with the delegate was used.
Cleaned up @rodchile's excellent work integration OAuth 1.0 and 2.0 into RestKit. Changes
are as follows:
* Introduced new RKRequestAuthenticationType to replace the forceBasicAuthentication and other
methods for influencing how authorization works.
* Moved TDOAuth code into Vendor/
* Renamed authorization code flow classes and delegate methods for clarity.
