doc: readme

README.md

@@ -55,4 +55,17 @@ Letsencrypt DNS challenges.
      Access Token, in which case use compose.gandi-personal-access-token.yml.
 6. Redeploy Traefik, using e.g. `abra app deploy YOURAPPDOMAIN -f`
 
+## Blocking scrapers with [Anubis](https://anubis.techaro.lol/)
+
+Uncomment the lines on the Anubis section of the configuration.  Set
+a domain name for the cookies and a domain that will serve Anubis
+redirection service.  Optionally and for [added
+security](https://anubis.techaro.lol/docs/admin/configuration/redirect-domains),
+set a list of the domain names for the apps that are going to be
+protected.
+
+After deploying these changes, go to each recipe that supports Anubis
+and follow the process there.  **Enabling Anubis here is not enough for
+protection your apps.**
+
 [`abra`]: https://git.autonomic.zone/autonomic-cooperative/abra