app.js

var express = require('express')
    , routes = require('./routes')
    , user = require('./routes/user')
    , http = require('http')
    , path = require('path')
    , vash = require('vash');

var app = express();

app.configure(function () {

    vash.config.debug = true;

    app.set('port', process.env.PORT || 3000);
    app.set('views', __dirname + '/views');
    app.set('view engine', 'vash')

    // allow for .html extension for templates as well as vash
    app.engine('html', vash.__express);
    app.engine('vash', vash.__express); // just because we're running within the Vash repo

    app.use(express.favicon());
    app.use(express.logger('dev'));
    app.use(express.bodyParser());
    app.use(express.methodOverride());
    app.use(express.cookieParser('your secret here'));
    app.use(express.session());
    app.use(app.router);
    app.use(express.static(path.join(__dirname, 'public')));
});

app.configure('development', function () {
    app.use(express.errorHandler());
});

app.get('/', routes.index);
app.get('/users', user.list);

http.createServer(app).listen(app.get('port'), function () {
    console.log("Express server listening on port " + app.get('port'));
});

index.js

exports.index = function(req, res){
  res.render('index.vash', { title: 'xxx' });
};