def validation(html, resource_name)
      resource_data_path = File.join(@data_folder, filenameize(resource_name))
      HTMLValidationResult.new(resource_name, html, resource_data_path,  @tidy_flags, @options)
    end
def validation(html, resource_name)
      resource_data_path = File.join(@data_folder, filenameize(resource_name))
      HTMLValidationResult.new(resource_name, html, resource_data_path,  @tidy_flags, @options)
    end
:html:      The html to validate
 :resource:  Used to create a name for the result file, nothing more. Usually a URL.