Update app.js, set env to production

app.js

@@ -18,7 +18,7 @@ i18n.configure({
   directory: './locales'
 });
 
-var env = process.env.NODE_ENV || 'testing';
+var env = process.env.NODE_ENV || 'production';
 const config = require('./config/config')[env];
 
 var app = express();