Add a note so users don't think that the user creation failure isn't necessarily a bad thing

tables/create_tables

@@ -1,6 +1,10 @@
 #! /bin/sh
 
 echo Create the base user
+echo NOTE: It's ok for this to fail if the user already exists
+echo       there doesn't appear to be a way to create a user only
+echo       if they don't exist so we have to live with a potential
+echo       error after we try.
 mysql -p -u root < create_user.sql
 
 echo Create the apidb database, and tables