title: Is it possible to launch another app in iOS 8 using Swift?
body: <p>Is it possible to launch any app from within another app?</p>
  
  <p>For example, in my application, I want the user to push a button and launch another app (don't close the current app, just open another app and switch to it).</p>
  
  <p>How can I do it in iOS 8 using Swift?</p>