def chef_repo?
        @_chef_repo ||= begin
          chef_folders = %w(.chef certificates config cookbooks data_bags environments roles)
          (root_folders & chef_folders).size > 2
        end
      end
def chef_repo?
        @_chef_repo ||= begin
          chef_folders = %w(.chef certificates config cookbooks data_bags environments roles)
          (root_folders & chef_folders).size > 2
        end
      end
Determines if the current project is a chef repo

 @return [Boolean]
   true if the current project is a chef repo, false otherwise