Install redis

Install redis for testing purpose (fast, 2 min)

1. Go on https://app.redislabs.com/
2. Register or log-in with Google or something
3. Select a cloud vendor of your region
4. Click on the database named "yourname-free-db"
5. There is a parameter called Public Endpoint where you would find a very-long-hostname:port
6. In the Security section you would find username and password
7. Now you can set your credentials inside config.yml
8. Done