title: ngTableEventsChannel.onAfterDataFiltered is not function?
body: <p>I am trying to do the following: </p>
  
  <pre><code>activate();
  
  function activate() {
      ngTableEventsChannel.onAfterDataFiltered(function(tableParams, filteredData){
          //DO SOMETHING
      });
  }
  </code></pre>
  
  <p>However, my browsers shows an error on the console:</p>
  
  <blockquote>
    <p>TypeError: ngTableEventsChannel.onAfterDataFiltered is not a function</p>
  </blockquote>