title: UIImageView blinking animation
body: <p>I am trying to make a <code>UIImageView</code> blink upon <code>viewDidLoad</code>. I am not sure what the best way to do this is. I've tried using loops with <code>.hidden=YES</code> and <code>.hidden=NO</code> but this seems like a bad way to do this. I need some proper advice.</p>