title: Add a UIview to an UIViewController
body: <p>I'm a beginner in Iphone development. I have a project with a single openGL View.</p>
  
  <p>I already wrote an UIView Controller class. but I don't know how to add the view to the UIViewController, and how to integrate the UIViewController to the project. Also, I don't know</p>
  
  <p>Any help, similar example, or link to a tutorial is very appreciated. Thanks.</p>