def asset_folders
      folders = []
      app_folders do |app_folder|
        Dir["#{app_folder}/*/assets"].sort.each do |asset_folder|
          folders << yield(asset_folder)
        end
      end

      folders.flatten
    end
def asset_folders
      folders = []
      app_folders do |app_folder|
        Dir["#{app_folder}/*/assets"].sort.each do |asset_folder|
          folders << yield(asset_folder)
        end
      end

      folders.flatten
    end
Return every asset folder we need to serve from