title: How do I set and load NSUserDefaults in AppDelegate
body: <p>In didFinishLaunchingWithOptions I have:</p>
  
  <pre><code>let defaults = NSUserDefaults.standardUserDefaults()
      if let name = defaults.stringForKey("userNameKey") {
          println(name)
      }
  </code></pre>
  
  <p>In the applicationWillTerminate I have: </p>
  
  <pre><code>let defaults = NSUserDefaults.standardUserDefaults()
  defaults.setObject("Coding Explorer", forKey: "userNameKey")
  </code></pre>
  
  <p>But upon application load(which i've closed and reopened several times on the iphone simulator), it does not print. Any clue why? </p>