[addon] add bingeGroup to stream responses

addon/index.js

@@ -8,6 +8,5 @@ app.use(express.static('static', { maxAge: '1y' }));
 app.use((req, res, next) => serverless(req, res, next));
 app.listen(process.env.PORT || 7000, () => {
   initBestTrackers()
-      .then(() => console.log(`Started addon at: http://localhost:${process.env.PORT || 7000}`))
-      .catch(error => console.error('Failed init trackers', error));
+      .then(() => console.log(`Started addon at: http://localhost:${process.env.PORT || 7000}`));
 });