text: var express = require("express");
  var bodyParser = require("body-parser");
  
  var PORT = process.env.PORT || 8000;
  
  var app = express();
  
  app.use(express.static("public"));
  
  app.use(bodyParser.urlencoded({ extended: true }));
  app.use(bodyParser.json());
  
  var exphbs = require('express-handlebars');
  
  app.engine('handlebars', exphbs({ defaultLayout: 'main' }));
  app.set('view engine', 'handlebars');
  
  var routes = require('./controllers/burgers_controller.js');
  
  app.use(routes);
  
  app.listen(PORT, function() {
    console.log("Server listening on: http://localhost:" + PORT);
  });