ios swiftでPPRevealsideViewControlを使用

pod 'PPRevealSideViewController' 

pod install

var theRevealSideViewController: PPRevealSideViewController!

    func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
        // Override point for customization after application launch.
        theRevealSideViewController = PPRevealSideViewController(rootViewController: self.window?.rootViewController);
        self.window?.rootViewController = theRevealSideViewController;

        return true
    }

        self.aboutViewController = AboutViewController(nibName: "AboutViewController", bundle: nil)
@IBAction func aboutBtnClicked(sender: AnyObject){
        NSLog("  about   ")
        self.revealSideViewController.pushViewController(self.aboutViewController, onDirection: PPRevealSideDirection.Right, animated: true)
}