title: Suitable event for hidden column on UI grid
body: <p>I am using ui grid.</p>
  
  <blockquote>
    <p><a href="http://ui-grid.info/docs/#/tutorial" rel="nofollow">http://ui-grid.info/docs/#/tutorial</a></p>
  </blockquote>
  
  <p>In that there is option <strong>hide column</strong>. I want to get event when user hide the column. I want to show alert when column is hidden? Is there any event in ui grid which fire when column is hidden?</p>
  
  <blockquote>
    <p><a href="http://plnkr.co/edit/9kDPhXz1d5Yn2ioyKa6w?p=preview" rel="nofollow">http://plnkr.co/edit/9kDPhXz1d5Yn2ioyKa6w?p=preview</a></p>
  </blockquote>
  
  <pre><code>&lt;div ng-controller="MainCtrl"&gt;
       &lt;div class="grid" ui-grid="gridOptions" ui-grid-move-columns&gt;&lt;/div&gt;
  &lt;/div&gt;
  </code></pre>
  
  <p><code>hide column</code> is display when user click on header of column ..there is popup screen which have option of hide column.</p>