Easy Feature Rollouts in Rails

rollout.rb

module Rollout
  def self.features
    @features ||= YAML.load_file(Rails.root.join("config", "rollout.yml"))[Rails.env]
  end

  def self.features=(value)
    @features = value
  end

  def self.active?(key)
    features[key.to_s]
  end
end