code: function init (options, crawlCallback, recrawlCallback, endCallback, proxies) {
  
        requestQueue = require(options.queueModuleName);
        requestQueue.init(options, onUrlToCrawl, endCallback);
        onCrawl = crawlCallback;
        onRecrawl = recrawlCallback;
  
        proxyList = proxies;
    }
docs: Init the Queue
  
  @param The number of tasks/connections that the request queue can run in parallel
  @param The callback executed when a resource has been crawled
  @param The callback executed when a resource has been recrawl (probably due to an error)
  @param The callback executed when all tasks (urls to crawl) are completed
  @param The proxies to used when making http requests