title: swift: Add multiple <key, value> objects to NSDictionary
body: <p>I'm trying to add multiple  objects to NSDictionary, like</p>
  
  <pre><code>var myDict: NSDictionary = [["fname": "abc", "lname": "def"], ["fname": "ghi", "lname": "jkl"], ...]
  </code></pre>
  
  <p>Is it even possible to do this? If not, please suggest a better way. I actually need to convert this NSDictionary to JSON string and send that to the server, so I need multiple objects in NSDictionary.</p>