app.js

// set up server
var config = require('./config/config.js'), // import config variables
  port = config.port,                       // set the port
  express = require('express'),             // use express as the framwork
  app = express(),                          // create the server using express
  path = require('path');                   // utility module

app.use(express.static(path.join(__dirname, 'public'))); // this middleware serves static files, such as .js, .img, .css files

// Initialize server
var server = app.listen(port, function () {
  console.log('Listening on port %d', server.address().port);
});

// app.get('/', function (req, res) {
//   res.render('index.html');
// });