AFNetworking upgrade to 4.0.1

[peter-NXT]

UiWebView is deprecated and was part of the AFNetworking pod v.2.6.0. The AFNetworking was upgraded to 4.0.1 (version 4.0.0 stops using the UIWebView), but PicoKit only works with 2.6.0. I forked this pod and tried to integrate it with the latest AFNetworking, but I found out it won't be that easy because since 2.11.2015 (https://github.com/AFNetworking/AFNetworking/commit/01f6aed22a357d5498eeb107d25ffbc7da101316) the support of AFNetworking for NSURLConnection ended. Only NSURLSession can be used. Now I have two options: either upgrade this lib to use NSURLSession (but I'm complete newbie to objectiveC) or use different pod.

@maxep Is it even possible to make this pod use NSURLSession? Thanks