title: FullCalendar count total quantity of daily clientEvents
body: <p>I am trying to count the total quantity WITHIN daily events in FullCalendar to stop further events been booked on any specific day once the LIMIT reaches <code>4</code>.</p>
  <p>Here is what i have which works okay on the daily events when it reaches <code>4</code> BUT exceeds the <code>qty</code>.</p>
  <pre><code>var eventCounter = 0;
  
  $('#calendar').fullCalendar('clientEvents', function(event) {
      if(moment(start).format('YYYY-MM-DD HH:mm:ss') == event.start.format('YYYY-MM-DD HH:mm:ss')) {
          eventCounter++;
      }
  });
  
  if(eventCounter &lt; 4) {
      $('#ModalAdd #start').val(moment(start).format('YYYY-MM-DD HH:mm:ss'));
      $('#ModalAdd #end').val(moment(end).format('YYYY-MM-DD HH:mm:ss'));
      $('#ModalAdd').modal('show');
  } else {
      swal({
        title: &quot;Maximum Bookings&quot;,
        text: &quot;Sorry, the maximum number of bookings are taken for this day. Please select another date.&quot;,
        type: &quot;warning&quot;
      });
  }
  </code></pre>
  <p>What i want is the <code>qty</code> count of the <code>event[]</code> per day and not the events.</p>
  <p>Example of events array;</p>
  <pre><code>events: [
      {
          id: '233',
          title: 'Tandem Jump',
          qty: '4',
          start: '2016-11-29 00:00:00',
          end: '2016-11-29 00:00:00'
      },
      {
          id: '239',
          title: 'Tandem Jump',
          qty: '2',
          start: '2016-11-30 00:00:00',
          end: '2016-11-30 00:00:00'
      },
  ]
  </code></pre>