title: Swipe between two UIViewControllers' views
body: <p>I know I have asked this question a couple of times, but I'm very inexperienced and don't think I've been given the right answer yet.</p>
  
  <p>I now have two view controllers, each with a .h file, a .m file, and a .xib file. In both the .xib files, I have a UIView. How can I make it so that you can swipe between these two views? For example, the app opens on the first view, then you swipe from the right to the left and the next view appears. I want the animation of the swiping to be like that of the Photos app when swiping through photos. </p>