AFNetworking/AFNetworking — pull request #1742 by johanforssell (2014-01-10 12:22:18+00:00)
Title: Update README.md: multi-part upload task example

I found the documentation lacking an example of how to do multi-part uploads with feedback through NSProgress.
Specifically the crucial connection between multi-part upload and `uploadTaskWithStreamedRequest:progress:completionHandler:`.

(However, the progress part was not working correctly until https://github.com/AFNetworking/AFNetworking/pull/1617)