title: Master View Controller and Detail View Controller not found in Object Library
body: <p>In Xcode 5.0.2 when I create a new universal Master View iOS application and then look at the generated Main_iPhone.storyboard and the source code in *.m and .h files -</p>
  
  <p>a lot of stuff seems to be created visually in the storyboard.</p>
  
  <p>But I don't understand, where do the Master View Controller and Detail View Controller come from, I can not find them in the Object Library (on the right side of Xcode):</p>
  
  <p><img src="https://i.stack.imgur.com/a9jMT.png" alt="screenshot"> </p>
  
  <p>So if I would create a blank new storyboard file - where would I find these 2 types of controllers, so that I could drag them into the storyboard?</p>