title: AFNetworking 2.0 JSON parsing
body: <p>There were some changes in new version of AFNetworking (2.0). </p>
  
  <p>I'm now confused with all new functions and I would like to know which class/method would be best for getting JSON data from http post request ? Should I build some singleton class like the one that was used in previous versions of AFNetworking (<a href="https://stackoverflow.com/questions/9411364/afnetworking-afjsonrequestoperation-convert-to-afhttpclient">AFNetworking (AFJSONRequestOperation) convert to AFHTTPClient</a>) ?</p>
  
  <p>Thanks.</p>