hoteltonight/HTUpdateAggregator — pull request #1 by jacobjennings (2014-03-01 20:34:42+00:00)
Title: Use Facebook's FBKVOController instead of SFObservers

SFObservers appears to be unstable when used with the latest AFNetworking.
I think Facebook's KVOController is a safer alternative, since it doesn't rely on
swizzling NSObject's KVO methods.