added post-init code to prepare the major mode in accordance to its decl...

This package recommends to do <code>autoload</code> and <code>add-to-list</code> manually in the init file. I have included that code in a post-init hook in the recipe so that there is no need for the user to edit the init file anymore.
I have run <code>test/check-recipe</code> agains this recipe and and no problem is reported.