title: disable UIScrollView dragging event to specific direction and send the event to super
body: <p>I have <code>UIView</code> and I attached to it a <code>UIPanGestureRecognizer</code>.
  inside the <code>UIView</code> I have <code>UIScrollView</code> with paging enabled and I set the content size so scrollView could be scrolled <strong><em>just</em></strong> to the left. </p>
  
  <p><em><strong>the problem:</em></strong></p>
  
  <p>I want when user try to drag scrollView To the right, to send the event up to UIView so 'UIPanGestureRecognizer' can handle the touch event</p>