code: function crawlImages(result, $, endCallback) {
  
      if (! result.images) {
        return endCallback();
      }
  
      log.debug({"url" : result.url, "step" : "analyzeHTML", "message" : "CrawlImages"});
  
      async.each($('img'), function(img, callback) {
          crawlImage($, result, img, callback);
      }, endCallback);
  }
docs: Crawl image tags found in the HTML page
  
  @param The HTTP response with the crawl options
  @param the jquery like object for accessing to the HTML tags.
  @param callback()