document teh anonymization in dev/stage

service/crm.md

@@ -247,6 +247,11 @@ TODO: clarify the GiantRabbit deployment workflow. They seem to have
 one branch per environment, but what does that include? Does it matter
 for us?
 
+There's a `drush` script that edits the dev/stage databases to
+replace PII in general, and in particular change the email of everyone
+to dummy aliases so that emails sent by accident wouldn't end up in
+real people's mail boxes.
+
 ## Issues
 
 Since there are many components, here's a table outlining the known