title: fullcalendar do something when view change
body: <p>I need to do something when view change. For example when from motnh go to agendaDay. </p>
  
  <p>Didnt work anythink.any ideas?</p>
  
  <pre><code>viewRender:(function() {
  
                  var lastViewName;
                  return function(view) {
  
                      var view = $('#calendar').fullCalendar('getView');
                      alert('The new title of the view is ' + view.title);
                  }
              }),
  </code></pre>
  
  <p>and</p>
  
  <pre><code>viewRender:(function(view) {
                  var view = $('#calendar').fullCalendar('getView');
                  alert('The new title of the view is ' + view.title);
              }),
  </code></pre>