Add ReactiveCocoa to the dependencies
Add an NSError category allowing to copy an error and add some informations
Fix the banner license for the category applied to the NSURL class

Seriously, I hate this shit, Apple.
Add all the headers of the framework to the main header
Rework the `upload…` methods, they return now a RACSignal. Add new methods to upload multiple images.
Rename all the files from "JPImgur*" to "Imgur*"

Part 1/2 of the project renaming
Replace all the "JPImgur" occurences with "Imgur" in every file

Part 2/2 of the project renaming
Rename source files starting with "Imgur*" to "IK*"

Part 1/2 of the classes prefix renaming
Rename classes, enumerations and constants from "Imgur*" to "IK*"

Part 2/2 of the classes prefix renaming
Update README.md
Fix IKVote values
Fix IKAuthType to conform to Apple's naming convention
Rework the models' asynchronous methods to return an RACSignal

Allows to easily chain many asynchronous methods
Fix the values for the constant keys used in NSError informations