Update app.js, revert env name to testing, changes to env will be made by...

Update app.js, revert env name to testing, changes to env will be made by using different config files

app.js

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