text: var express = require('express');
  var app = express();
  
  var bodyParser = require('body-parser');
  
  var PORT = process.env.PORT || 3000;
  
  app.use(bodyParser.json());
  
  app.get('/', function (req, res) {
    res.send('Hello World!');
  });
  
  app.listen(PORT, function () {
    console.log('Example app listening on port ' + PORT);
  });
  
  