title: Daterangepicker requires underscore to be loaded
body: <p>I'm trying to run <code>daterangepicker()</code> on a website but it doesn't work.
  This is my code:</p>
  
  <pre><code>&lt;input class="daterangepicker-field"&gt;
  
  $(".daterangepicker-field").daterangepicker({
      forceUpdate: true,
      callback: function(startDate, endDate, period){
          var title = startDate.format('L') + ' – ' + endDate.format('L');
          $(this).val(title);
      }
   });
  </code></pre>
  
  <p>This doesn't work on my input and it says that <code>daterangepicker requires underscore to be loaded</code></p>