code: def build
        log_configuration_information
  
        if subscription_list.empty?
          Mako.logger.warn 'No feeds were found in your subscriptions file. Please add feeds and try again.'
          return
        end
  
        log_time do
          request_and_build_feeds
          renderers.each do |renderer|
            renderer_instance = renderer.new(bound: self)
            writer.new(renderer: renderer_instance,
                       destination: File.expand_path(renderer_instance.file_path, Mako.config.destination)).write
          end
        end
      end
docs: Gets list of feed_urls, requests each of them and uses the constructor to
   make Feed and Article objects, then calls to the renderers to render
   the page and stylesheets.