Fixed Xcode project
Authentication:
===============
* Added doxygen configuration
* Added Lumberjack as logging system
* Added TConstants.h/m for global defines and typedefs
* Added TCommonException as an extension to NSException
* Added TOAuthClient.h/m with static methods to receive a new token using the users
  default browser
* Added TKeychainAccess.h/m with static methods to add/read/remove/update the token (User Keychain)