No icon on the demo website about notification-logger HOT 8 OPEN

(function() {
    var isInitialized = false, _console = {};
    var icon = 'https://cdn2.iconfinder.com/data/icons/windows-8-metro-style/512/console.png'
    Notification.requestPermission();
    function log(body, title) {
        title = title || "Notification";
        if (!("Notification" in window)) {
            alert("This browser does not support desktop notification");
        } else if (Notification.permission === "granted") {
            new Notification(title ,{body: body, icon: icon});
        } else if (Notification.permission !== 'denied') {
            Notification.requestPermission(function (permission) {
                if (permission === "granted") {
                    new Notification(title ,{body: body, icon: icon});
                }
        });
      }
    }

    function genericLogger() {
        return function (body, title) {
            title = title || "Notification";
            if (!("Notification" in window)) {
                alert("This browser does not support desktop notification");
            } else if (Notification.permission === "granted") {
                new Notification(title ,{body: body, icon: icon});
            } else if (Notification.permission !== 'denied') {
                Notification.requestPermission(function (permission) {
                    if (permission === "granted") {
                        new Notification(title ,{body: body, icon: icon});
                    }
                });
            }
        }
    }

    function originalFnCallDecorator(fn, fnName) {
        return function() {
            fn.apply(this, arguments);
            if (typeof _console[fnName] === 'function') {
                _console[fnName].apply(console, arguments);
            }
        };
    }

    function destroy() {
        isInitialized = false;
        console.log = _console.log;
    }

    function init() {
        if (isInitialized) { return; }
            isInitialized = true;
        _console.log = console.log;
        console.log = originalFnCallDecorator(log, 'log');
    }

    window.logger = {
        log: log,
        init: init,
        destroy:destroy
    }
})();

function log(body[, title, icon])

function log(body[, title, options])

var options = {
  icon: 'validUrl',
  ...
}