AFNetworking/AFOnoResponseSerializer — pull request #4 by jernejstrasner (2014-07-10 08:53:25+00:00)
Title: Added 'application/rss+xml' as an acceptable content type

I stumbled across multiple RSS feeds that use "application/rss+xml" in the content type header. As it seems to be quite common, adding to the default set of acceptable content types seems appropriate.