Update AFNetworking

[BobDG]

I think you use an old version of AFNetworking. It was already in my project because I already use it for something else and now I get million compile errors because your code calls old methods of afnetworking...

[richard-wu]

I have updated my existing code because of upgrading AFNetworking to 2.0. I hope GD can do this, too.

[lcmoba]

same issue here, the code still giving compile errors because libraries have been updated to recent versions and the GD code still is using old versions.

richard-wu you have updated the code. Could you share?

[kiwi07]

Please update AFNetworking to the latest version!