chore(readme): add reference to our usage

README.md

@@ -3,6 +3,7 @@ DigitalOcean doesn't propose any way of automating snapshots.
 There are [some SaaS](https://snapshooter.io/) that can take care of it but paying to execute some API requests seemed a bit off.
 
 That's why we developed a simple script which you can run with cron jobs or in CI services like Travis for free.
+We use it daily to manage [our backups](https://github.com/tomochain/backups).
 
 It includes:
 - Snapshoting droplets