Using Express to serve a static site on Node.js for easy deploy to Heroku

app.js

/**
 * This is your Node app's main file
 * Don't forget to run `heroku ps:scale web=1` in the Terminal
 */
var express = require('express');
var http = require('http');
var path = require('path');
var app = express();

app.set('port', process.env.PORT || 3000);

app.use(express.static(path.join(__dirname, 'public')));

if ('development' == app.get('env')) {
  app.use(express.errorHandler());
}

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