helper/heroku.js
var express = require('express');
var packageInfo = require('../package.json');
var app = express();
app.get('/', function (req, res) {
res.json({ version: packageInfo.version });
});
app.get('/wakemydyno.txt', function (req, res) {
res.json({ version: packageInfo.version });
});
var server = app.listen(process.env.PORT, function () {
var host = server.address().address;
var port = server.address().port;
console.log('Web server started at http://%s:%s', host, port);
});