title: Why is WKInterfacePicker considered an undeclared type?
body: <p>I'm using Xcode Version 7.0 beta 3.  When attempting to use a WKInterfacePicker, I get an error.</p>
  
  <p>Here is my code for my WKInterfaceController:</p>
  
  <pre><code>import WatchKit
  import Foundation
  
  
  class RBWelcomeVC: WKInterfaceController {
  
  @IBOutlet var pickerAllWorkouts: WKInterfacePicker!
  
  
  override func awakeWithContext(context: AnyObject?) {
      super.awakeWithContext(context)
  
      // Configure interface objects here.
  }
  
  override func willActivate() {
      // This method is called when watch view controller is about to be visible to user
      super.willActivate()
  }
  
  override func didDeactivate() {
      // This method is called when watch view controller is no longer visible
      super.didDeactivate()
  }
  
  }
  </code></pre>
  
  <p>Notice my IBOutlet.  When I created it by Control dragging from the storyboard.  It created the outlet and immediately put this error with it:</p>
  
  <pre><code> Use of undeclared type 'WKInterfacePicker'
  </code></pre>
  
  <p>Since that didn't work, I tried creating the outlet manually.  I typed:</p>
  
  <pre><code> @IBOutlet var pickerAllWorkouts: WKInterfa...
  </code></pre>
  
  <p>When attempting to let Xcode finish the autocomplete, I noticed that WKInterfacePicker was not a suggestion.  The picker did not exist.  Is this just a bug or am I doing something wrong?</p>