title: Using ui-grid constants to disable scrollbars
body: <p>With the latest version of ui-grid (v3.0.0-rc.16) it is possible to turn the horizontal and vertical scrollbar off seperately. 
  I got this working by exchanging </p>
  
  <pre><code>$scope.gridOptions.enableScrollbars = false;
  </code></pre>
  
  <p>with</p>
  
  <pre><code>$scope.gridOptions.enableHorizontalScrollbar = 0;
  $scope.gridOptions.enableVerticalScrollbar = 0;
  </code></pre>
  
  <p>In the sources of ui-grid there are three Constants defined for the scrollbars:</p>
  
  <pre><code>scrollbars: {
    NEVER: 0,
    ALWAYS: 1,
    WHEN_NEEDED: 2
  }
  </code></pre>
  
  <p>Facing the fact that ui-grid is still unstable and changed very often, i would feel more comfortable using those constants instead of the specific values. But how can i access them ?</p>
  
  <p>Plunker: <a href="http://plnkr.co/edit/h0ewAZK616rKCH3T62te">http://plnkr.co/edit/h0ewAZK616rKCH3T62te</a></p>