title: How to use SlideNavigationController in Swift?
body: <p>I need use SlideNavigationController in my app project, but I can't show the menu in my NavigationController Bar.</p>
  
  <p>SlideNavigationController was downloaded from: <a href="https://github.com/aryaxt/iOS-Slide-Menu" rel="nofollow">https://github.com/aryaxt/iOS-Slide-Menu</a></p>
  
  <p>Here's my code in AppDelegate.swift:</p>
  
  <pre><code>var leftMenu = LeftMenuViewController()
  var rightMenu = RightMenuViewController()
  
  SlideNavigationController.sharedInstance().leftMenu = leftMenu
  SlideNavigationController.sharedInstance().rightMenu = rightMenu
  SlideNavigationController.sharedInstance().menuRevealAnimationDuration = 0.18
  
  var leftButton =  UIButton(frame: CGRectMake(50, 50, 30, 30))
  leftButton.setImage(UIImage(named: "gear.png"), forState: UIControlState.Normal)
  leftButton.addTarget(SlideNavigationController.sharedInstance(), action: "toggleLeftMenu", forControlEvents: UIControlEvents.TouchUpInside)
  var leftBarButtonItem = UIBarButtonItem(customView: leftButton)
  
  SlideNavigationController.sharedInstance().leftBarButtonItem = leftBarButtonItem
  SlideNavigationController.sharedInstance().title = "123234"
  
  let screenBounds:CGRect = UIScreen.mainScreen().bounds
  
  self.window = UIWindow(frame: screenBounds);
  var nav = SlideNavigationController.sharedInstance()
  
  self.window?.rootViewController = nav;
  self.window?.makeKeyAndVisible();
  </code></pre>
  
  <p>Can anyone tell me how to configure this properly?</p>