Fix heroku deploy

lib/server.js

@@ -142,7 +142,7 @@ app._initializeHTTP = function() {
 
   this.use(util.allowCrossDomain);
 
-  this._app.get(this._options.path, function(req, res, next) {
+  this.get('/', function(req, res, next) {
     res.send(require('../app.json'));
   });