Feature Flags with Rollout Discussion

Very cool! Thanks, Chris!

I'm still confused. If I want to deactivate a feature to all users where should I put my code. I defined the $rollout variable but when I enter rails console $rollout return nil. And the where the :edit_tweet come from? What should I write if I want to do with other feature. There are many questions. It'll be very grateful if you can answer me cause I'm a totally fresh hand in building web apps.