text: var express = require('express');
  var app = express();
  
  app.use('/', express.static(__dirname + '/public'));
  
  app.get('/',function(req,res){
    res.sendFile('index.html');
  });
  
  //port for heroku
  let port = process.env.PORT || 3000;
  
  app.listen(port, function () {
    console.log('Example app listening on port 3000!');
  });
  