configure.js

var connect = require('connect'),
    path = require('path'),
    routes = require('./routes'),
    exphs = require('express3-handlebars'),
    moment = require('moment');

module.exports = function (app) {
    app.engine('handlebars', exphs.create({
        defaultLayout: 'main',
        layoutsDir: app.get('views') + '/layouts',
        partialsDir: [app.get('views') + '/partials'],
        helpers: {
            timeago: function (timestamp) {
                return moment(timestamp).startOf('minute').fromNow();
            }
        }
    }).engine);
    app.set('view engine', 'handlebars');
    app.use(connect.logger('dev'));
    app.use(connect.bodyParser({
        uploadDir: path.join(__dirname, '../public/upload/temp')
    }));
    app.use(connect.json());
    app.use(connect.urlencoded());
    app.use(connect.methodOverride());
    app.use(connect.cookieParser('superdupersecretkey'));
    app.use(app.router);
    app.use('/public/', connect.static(path.join(__dirname + '../public')));
    
    if ('development' === app.get('env')) {
        app.use(connect._errorHandler());
    }
    routes.initialize(app);
    return app;
};

server.js

var express = require('express'),
    config = require('./server/configure'),
    app = express();

app.set('port', process.env.PORT || 3300);
app.set('views', __dirname + '/views');
app = config(app);

var server = app.listen(app.get('port'), function () {
    console.log('Server up: http://localhost:' + app.get('port'));
});