title: Implementation of application:openURL:sourceApplication:annotation
body: <p>I started working on the app before the release of Xcode8 and and then switched over , When I try to log into the app using Facebook login I get the following error</p>
  
  <blockquote>
    <p>Implementation of application:openURL:sourceApplication:annotation: not found. Please add the handler into your App Delegate. Class: GhostGab.AppDelegate</p>
  </blockquote>
  
  <p>I checked all the settings and they seemed fine . Any help will be appreciated</p>
  
  <pre><code>func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -&gt; Bool {
      // Override point for customization after application launch.
      FIRApp.configure()
      FBSDKApplicationDelegate.sharedInstance().application(application, didFinishLaunchingWithOptions: launchOptions)
      return true
  }
  
    func application(application: UIApplication, openURL url: URL, sourceApplication: String?, annotation: AnyObject) -&gt; Bool {
  
      let facebookDidHandle = FBSDKApplicationDelegate.sharedInstance().application(
          application,
          open: url,
          sourceApplication: sourceApplication,
          annotation: annotation)
      // Add any custom logic here.
      return facebookDidHandle
  }
  </code></pre>