title: How can I POST data to JSON based REST API using NSJSONSerialization class?
body: <p>I would like to see some concrete example(s)/tutorial on how to GET and POST data to and from a URL using NSJSONSerialization class. </p>
  
  <p>I know how to actually GET the data , it is the POST which is confusing to some degree. Any helpful pointers will be much appreciated..</p>