Add note for using hooks for stopping and starting RDS replication

Author: jacobbednarz

doc/rds.md

@@ -32,11 +32,14 @@ Before trying to run any `gh-ost` migrations you will want to confirm the follow
 
 - [ ] You have a secondary cluster available that will act as a replica. Rule of thumb here has been a 1 instance per cluster to mimic MySQL-style replication as opposed to Aurora style.
 - [ ] The database instance parameters and database cluster parameters are consistent between your master and replicas
-- [ ] Executing `SHOW SLAVE STATUS\G` on your replica cluster displays the correct master host, binlog position, etc. 
+- [ ] Executing `SHOW SLAVE STATUS\G` on your replica cluster displays the correct master host, binlog position, etc.
 - [ ] Database backup retention is greater than 1 day to enable binlogs
+- [ ] You have setup [`hooks`][ghost_hooks] to issue RDS procedures for stopping and starting replication. (see [github/gh-ost#163][ghost_rds_issue_tracking] for examples)
 
 [new_issue]: https://github.com/github/gh-ost/issues/new
 [assume_rbr_docs]: https://github.com/github/gh-ost/blob/master/doc/command-line-flags.md#assume-rbr
 [migrate_test_on_replica_docs]: https://github.com/github/gh-ost/blob/master/doc/cheatsheet.md#c-migratetest-on-replica
 [aws_replication_docs]: http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/Aurora.Overview.Replication.MySQLReplication.html
 [percona_toolkit_patch]: https://github.com/jacobbednarz/percona-toolkit/commit/0271ba6a094da446a5e5bb8d99b5c26f1777f2b9
+[ghost_hooks]: https://envato.slack.com/archives/C08KD4AQJ/p1491197511461443
+[ghost_rds_issue_tracking]: https://github.com/github/gh-ost/issues/163