Just a heads up.
Generico is now good to go on Moodle 3. It also now has the ability to add more than 20 templates. (as requested by Dan K .. who wanted 60!!). You will need to get the latest version of the Generico Atto Editor plugin too.
You can set the number of templates at :
site admin -> plugins ->filters ->generico ->common settings
After you increase the number of templates, you will need to visit the site admin -> notifications page, and Moodle will create them for you then. Its best just to scroll to the bottom and save. Later each template will have its own tab under the Generico settings, so you can edit it properly then.