Logged port does not match the actual listening port

[dmartinezg]

When logging the startup, the logged port does not match the one used in the app (it is harcoded to 3000)

if (!module.parent) {
  app.listen(app.get('port'));
  console.log('listening on port 3000');
}

possible fix:

if (!module.parent) {
  var port = app.get('port');
  app.listen(port);
  console.log('listening on port ' + port);
}