title: How to add multiple classNames in to fullcalendar event object and deleting with one specified class name
body: <p>Does anyone know how I can add multiple class names in to one event?</p>
  
  <p>Currently my event object looks something like this.</p>
  
  <pre><code>  var eventObject = {
              title: displayText,
              start: item.startDate,
              end : item.endDate,
              allDay:true,
              color: '#BABBBF',
              editable : false,
              className : "user_block"
      }
  </code></pre>
  
  <p>When I tried something like this</p>
  
  <pre><code>var eventObject = {
                  title: displayText,
                  start: item.startDate,
                  end : item.endDate,
                  allDay:true,
                  color: '#BABBBF',
                  editable : false,
                  className : "user_block bday_block"
          };
  </code></pre>
  
  <p>The following code doesn't seem to excute with normal behaviour where it is suppose to remove all events with the "user_block" class</p>
  
  <pre><code>$("#calendar").fullCalendar('removeEvents', function(event) {
      return event.className == "user_block";
  });
  </code></pre>
  
  <p>Any ideas on how to solve this? Thank you.</p>