Update 1/18/2014: Fully updated for iOS 7 and AFNetworking 2.0 (original post by Scott Sherwood, update by Joshua Greene). In iOS 7, Apple introduced NSURLSession as the new, preferred method of networking (as opposed to the older NSURLConnection API). Using this raw NSURLSession API is definitely a valid way to write your networking code – we even have a tutorial on that. However, there’s an alte