Refactored Guard::Dsl#callback and updated specs, improved inline docs for Guard::Hook#hook, added ENV["GUARD_ENV"] = 'development' in Guardfile so we see hooks firing! Run specs on REE too.
Refactored Guard::Dsl#callback and updated specs, improved inline docs for Guard::Hook#hook, added ENV["GUARD_ENV"] = 'development' in Guardfile so we see hooks firing! Run specs on REE too.

Signed-off-by: Rémy Coutable <e12b7d115f1a23bcf98eb45e38f5af71df51a79d@rymai.me>

railsme/notiffany,kaldrenon/notiffany,kaosf/notiffany,guard/notiffany