title: UITableViewRowAnimation custom animation
body: <p>I know that there are the default <code>UITableViewRowAnimation</code> options, but is there a way to create my own animation?  If so, are their tutorials on this?  </p>
  
  <p>I want my cells to zoom toward the user, then fly off screen.</p>
  
  <p>I can't seem to find much about this...</p>