title: Emoji characters cannot be encoded to JSON
body: <p>I have a <code>UITextView</code> which I call <code>messageField</code>. The data within that <code>messageField</code> is <code>POST</code>-ed to server in JSON format. When the user types an Emoji character I am having trouble encoding the data to <code>JSON</code>. I am thinking Emoji uses Unicode encoding.</p>
  
  <p>Is there a way to encode an Emoji character to JSON? And back from JSON to Emoji to display in a <code>UILabel</code>?</p>