Pull port off the environment, default to 3000

Author: Edward Muller

server.js

@@ -16,6 +16,8 @@ var express = require('express');
 var bodyParser = require('body-parser');
 var app = express();
 
+app.set('port', (process.env.PORT || 3000));
+
 app.use('/', express.static(path.join(__dirname, 'public')));
 app.use(bodyParser.json());
 app.use(bodyParser.urlencoded({extended: true}));
@@ -39,6 +41,7 @@ app.post('/comments.json', function(req, res) {
   });
 });
 
-app.listen(3000);
 
-console.log('Server started: http://localhost:3000/');
+app.listen(app.get('port'), function() {
+  console.log('Server started: http://localhost:' + app.get('port') + '/');
+});