title: NSUserdefaults from TVTopShelfProvider conformed class: get nil
body: <p>I'm trying to get UserDefaults from ServiceProvider -  the Top Shelf extension class and get nil.</p>
  
  <pre><code>class ServiceProvider: NSObject, TVTopShelfProvider {
  ....
  
     var topShelfItems: [TVContentItem] {
     ....
     item!.title = String(NSUserDefaults.standardUserDefaults().objectForKey("title"))
  </code></pre>
  
  <p>At the same time when AppDelegate launches i can get the value.
  Is there any other way to save user-related data and then get this data from ServiceProvider?</p>