text: var express = require('express');
  var app = express();
  var session = require('express-session');
  var path = require('path');
  var logger = require('morgan');
  var cookieParser = require('cookie-parser');
  var bodyParser = require('body-parser');
  var http = require('http').Server(app);
  var io = require('socket.io')(http);
  
  // view engine setup
  app.set('views', path.join(__dirname, 'views'));
  app.set('view engine', 'jade');
  
  app.use(logger('dev'));
  app.use(bodyParser.json());
  app.use(bodyParser.urlencoded({ extended: true }));
  app.use(cookieParser());
  app.use(session({
  	secret: '%TBD%',
  	resave: true,
  	saveUninitialized: true
  }));
  app.use(express.static(path.join(__dirname, 'public')));
  
  app.use('/lib', express.static(__dirname + '/node_modules/Butterfly-js/dist'));
  
  // init socket
  require('./modules/socket.js')(io);
  
  // controllers
  var exampleController = require('./controllers/exampleController.js')(io);
  // end controllers
  
  // routes
  var exampleRoutes = require('./routes/example')(exampleController);
  
  app.use('/api/example', exampleRoutes);
  // end routes
  
  // catch 404 and forward to error handler
  app.use(function(req, res, next) {
  	var err = new Error('Not Found');
  	err.status = 404;
  	next(err);
  });
  
  // error handlers
  
  // development error handler
  // will print stacktrace
  if (app.get('env') === 'development') {
  	app.use(function(err, req, res, next) {
  		res.status(err.status || 500);
  		res.render('error', {
  			message: err.message,
  			error: err
  		});
  	});
  }
  
  // production error handler
  // no stacktraces leaked to user
  app.use(function(err, req, res, next) {
  	res.status(err.status || 500);
  	res.render('error', {
  		message: err.message,
  		error: {}
  	});
  });
  
  var server = http.listen(3000, function () {
  	var host = server.address().address,
  		port = server.address().port;
  
    console.log('Server listening at http://%s:%s', host, port);
  });
  