title: EGO Table View Pull Refresh too sensitive
body: <p>I implemented the ego table view pull to refresh mechanism into my iphone app. When i first implemented it, the pull to refresh worked perfectly.  However as of recently, it seems like the pull mechanism is too sensitive.  </p>
  
  <p>For example when im scrolling really quickly and i get to the bottom, I should have to pull for at least 1 or 2 full seconds before the mechanism realizes i want to refresh.  However even if i pull it for like .2 seconds, the mechanism loads more.</p>
  
  <p>I don't know if my question makes sense, but basically i'm wondering if there's a way to alter the code in ego table view pull refresh to not refresh unless i pull up for a longer period of time </p>