def css
      css_files = []
      @assets.each do |type, path|
        case type
          when :folder
            # Don't import any css/scss files that start with an underscore, so scss partials
            # aren't imported by default:
            #  http://sass-lang.com/guide
            base_path = base(path)
            css_files += Dir["#{path}/**/[^_]*.{css,scss,sass}"].sort.map do |folder|
              local_path = folder[path.size..-1].gsub(/[.](scss|sass)$/, '')
              css_path = @app_url + '/' + base_path + local_path
              css_path += '.css' unless css_path =~ /[.]css$/
              css_path
            end
          when :css_file
            css_files << path
        end
      end

      css_files.uniq
    end
def css
      css_files = []
      @assets.each do |type, path|
        case type
          when :folder
            # Don't import any css/scss files that start with an underscore, so scss partials
            # aren't imported by default:
            #  http://sass-lang.com/guide
            base_path = base(path)
            css_files += Dir["#{path}/**/[^_]*.{css,scss,sass}"].sort.map do |folder|
              local_path = folder[path.size..-1].gsub(/[.](scss|sass)$/, '')
              css_path = @app_url + '/' + base_path + local_path
              css_path += '.css' unless css_path =~ /[.]css$/
              css_path
            end
          when :css_file
            css_files << path
        end
      end

      css_files.uniq
    end
Returns an array of all css files that should be included.