Trying to learn Marionette

app-start.js

(function (app, $, backbone, marionette, options, undefined) {
    app = new marionette.Application();

    app.addInitializer(function () {
        app.Log("configuring marionette template compiler");
        marionette.TemplateCache.prototype.compileTemplate = function (rawTemplate) {
            return Hogan.compile(rawTemplate);
        };
    });

    app.addInitializer(function () {
        app.Log("configuring marionette template renderer");
        marionette.Renderer = {
            render: function (template, data) {
                var templateFunc = typeof template === 'function' ? template : marionette.TemplateCache.get(template);
                var html = templateFunc.render(data); //hogan rendering
                return html;
            }
        };
    });

    app.addInitializer(function () {
        app.Log("precompiling templates");
        $("#templates script").each(function (index, value) {
            var templateSelector = "#" + value.id;
            marionette.TemplateCache.get(templateSelector);
        });
    });

    app.Log = function (msg) {
        if (options.IsDebug) {
            if (typeof console !== 'undefined')
                console.log(msg);
        } else {
            //eat the log msg
        }
    };

    app.addRegions({
        MainRegion: "#main-content",
        TopNavigationRegion: "#top-nav"
    });

    app.Log("Starting App");
    app.start(options);


    app.vent.on("routing:started", function () {
        if (!backbone.History.started)
            backbone.history.start({ hashChange: options.SupportsHistoryApi, silent: true });
    });

    //var regView = new RegisterView();
    //app.MainRegion.show(regView);

} (window.MyApp = window.MyApp || {}, jQuery, Backbone, Backbone.Marionette, window.ApplicationOptions));