title: Scroll the cells using UI Testing
body: <p>Is there a method like</p>
  
  <pre><code>- (void)scrollByDeltaX:(CGFloat)deltaX deltaY:(CGFloat)deltaY;
  </code></pre>
  
  <p>for iOS?</p>
  
  <p>I think the above method is only for OSX.
  I would like to scroll my tableview according to the deltavalues provided.</p>
  
  <p>Thanks in advance.</p>