AFNetworking/AFNetworking — pull request #1249 by rbpasker (2013-08-24 12:50:34+00:00)
Title: Add convenience method for converting NSData to base-64 encoding.

Although not strictly required for AFNetworking, there are
so many web services that embed binary data (like images) using
base-64 encoding that adding this method to AFNetworking makes sense,
especially since its a trivial change.