Updates migration to Devise 2.2 spec, keeps earlier migration content as well.
The article is about creating an admin role, so you should generate an Admin model, not a User model.
Updated How To: Add an Admin Role (markdown)
Revert 498cffffccdb8d5552ab796cfdd3c8b069115078^ ... 498cffffccdb8d5552ab796cfdd3c8b069115078
Destroyed How To: Add an Admin Role (markdown)
Forgot to pluralise the AddAdminToUser(s) as the filename is add_admin_to_users.
changed migration name to be consistent with other wiki pages
escape backtick
fix exception message
Updated How to: add an admin role (markdown)
Restoring from the git repo for the wiki messed with the headings. Textile to a new markup.