text: var express = require('express');
  var app = express();
  
  app.set('port', (process.env.PORT || 3000));
  app.use(express.static(__dirname + '/public'));
  
  app.get('/', function(request, response) {
    response.send('Hello World');
  });
  
  app.listen(app.get('port'), function() {
    console.log('Node app is running on port', app.get('port'));
  });