title: Calendar is not displaying correctly using flatpickr
body: <p>I installed flatpickr by npm install flatpickr. Calender is displaying like when click on input control <a href="https://i.stack.imgur.com/GIxO5.png" rel="noreferrer"><img src="https://i.stack.imgur.com/GIxO5.png" alt="enter image description here"></a></p>
  
  <pre><code>var React = require('React');
  var ReactDOM = require('ReactDOM');
  var Flatpickr = require('flatpickr');
  
  var Calender = React.createClass({
  
      componentDidMount: function(){
      this.flatpickr = new Flatpickr(this.refs.date, {dateFormat: "m/d/Y"});
      },
  
      render: function() {
          return(
                  &lt;div&gt;            
                      &lt;input data-enable-time defaultValue='2016-11-11' ref="date_from" /&gt;    
                  &lt;/div&gt;
               );
      }
  });
  </code></pre>