Fixed compatibility with AFNetworking 2.0.0
Update podspec
Merge branch 'master' of https://github.com/maxgoedjen/GroundControl

For fixes: https://github.com/mattt/GroundControl/pull/9
Conflicts:
	AFNetworking (Reinstate pinned AFNetworking, this time 2.0.0)
	GroundControl.podspec (Remove legacy AFContentRequestOperations)
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