title: How i can use image in navigation bar title in swift ios
body: <p>i'm in trouble. i want to use image in navigation bar title, but i'm getting a error i.e "UIImage" is not a subtype of "NSString". Below the code, look it.</p>
  
  <pre><code>class Dashboard: UIViewController {
  
  override func viewDidLoad() {
      super.viewDidLoad()
      self.navigationItem.title = UIImage(named: "logo.png")        
      // Do any additional setup after loading the view.
  }
  
  override func didReceiveMemoryWarning() {
      super.didReceiveMemoryWarning()
      // Dispose of any resources that can be recreated.
  }
  
  }
  </code></pre>
  
  <p>Anyone can suggest? Thanks!</p>