title: moment.js: how to initialize from DD/MM/YYYY format
body: <p>I want to initilize moment from DD/MM/YYYY format
  ex: </p>
  
  <pre><code>var xmas = moment('25/12/2016'); //does not work
  
  
  var xmas = moment('2016-12-25');// works
  </code></pre>
  
  <p>Any idea ?</p>