Bot - choice menu and reload menu

gistfile1.txt

// https://github.com/Microsoft/BotBuilder/blob/master/Node/examples/basics-menus/app.js
//This Bot demonstrates how to create a simple menu for a bot. We've also added a
//reloadAction() to the menus dialog which lets you return to the menu from any 
//child dialog by simply saying "menu" or "back". 

bot.dialog('rootMenu', [
    function (session) {
        builder.Prompts.choice(session, "Choose an option:", 'Flip A Coin|Roll Dice|Magic 8-Ball|Quit');
    },
    function (session, results) {
        switch (results.response.index) {
            case 0:
                session.beginDialog('flipCoinDialog');
                break;
            case 1:
                session.beginDialog('rollDiceDialog');
                break;
            case 2:
                session.beginDialog('magicBallDialog');
                break;
            default:
                session.endDialog();
                break;
        }
    },
    function (session) {
        // Reload menu
        session.replaceDialog('rootMenu');
    }
]).reloadAction('showMenu', null, { matches: /^(menu|back)/i });