Added loader while webview is loading.

    public var url: String!

    public var delegate: LeegalityProtocol?

    public var loadSpinner: UIActivityIndicatorView!

    override public func viewDidLoad() {

        super.viewDidLoad()

        let requestUrl = URL(string: url+"?device=ios")!

        let requestObj = URLRequest(url: requestUrl)

        let webView:UIWebView = UIWebView(frame: UIScreen.main.bounds)

        loadSpinner = UIActivityIndicatorView(activityIndicatorStyle: UIActivityIndicatorViewStyle.gray)

        let transform:CGAffineTransform = CGAffineTransform(scaleX: 2.0, y: 2.0)

        loadSpinner.transform = transform;

        loadSpinner.center = view.center

        webView.delegate = self

        webView.loadRequest(requestObj)

        self.view.addSubview(webView)

        self.view.addSubview(loadSpinner)

    }

    override public func didReceiveMemoryWarning() {

        super.didReceiveMemoryWarning()

    }

    public func webViewDidStartLoad(_ : UIWebView) {

        loadSpinner.startAnimating()

    }

    public func webViewDidFinishLoad(_ : UIWebView) {

        loadSpinner.stopAnimating()

    }

    public func webView(_ webView: UIWebView, shouldStartLoadWith request: URLRequest, navigationType: UIWebViewNavigationType) -> Bool {

        let scheme = request.url?.scheme

        if scheme == "leegality" {