title: Creating a completely custom UIRefreshControl
body: <p>I need to create an entirely custom <code>UIRefresh</code> control. Animation, image, pull down amount, etc...</p>
  
  <p>My initial thought is to start from scratch, use a UIViewController, add my own view to it, animate by accessing the <code>UIScrollViewDelegate</code> methods.</p>
  
  <p>I can do all this but is there a way with slightly less work and easier to add to multiple <code>UITableView</code>s?</p>
  
  <p>Is it possible to subclass <code>UIRefreshControl</code> and change this amount of stuff inside it?</p>