text: 
  let express = require('express');
  let bodyParser = require('body-parser');
  let methodOverride = require('method-override')
  
  let app = express();
  
  app.use(express.static(process.cwd() + '/public'));
  
  
  app.use(bodyParser.urlencoded({ extended: false }));
  
  
  let exphbs = require('express-handlebars');
  app.engine('handlebars', exphbs({defaultLayout: 'main'}));
  app.set('view engine', 'handlebars');
  
  
  let router = require('./controllers/burgers_controllers.js');
  app.use('/', router);
  
  let port = process.env.PORT || 3000;
  app.listen(port);