title: Send additional data to a FullCalendar json feed via POST
body: <p>How do I send additional options to the events json feed for full calendar?</p>
  
  <p>I can set events as a JSON feed:</p>
  
  <pre><code>$('#calendar').fullCalendar({
      events: '/myfeed.php'
  });
  </code></pre>
  
  <p>and FullCalendar has an option to send additional data via a POST:</p>
  
  <pre><code>$('#calendar').fullCalendar({
  
      events: {
          url: '/myfeed.php',
          type: 'POST',
          data: {
              custom_param1: 'something'
          },
      }
  });
  </code></pre>
  
  <p>But this changes the GET query which look like:</p>
  
  <pre><code>/myfeed.php?start=2013-12-01&amp;end=2014-01-12&amp;_=1386054751381
  </code></pre>
  
  <p>Into a POST which is only sending my custom param - it doesn't send the start/end/_id</p>
  
  <p>The documentation states that the startParam and endParam are additional options for JSON feeds, but what value do I give these?</p>