title: Wait until the webpage loads in Scrapy
body: <p>I am using scrapy script to load URL using "yield".</p>
  
  <pre><code>MyUrl = "www.example.com"
  request = Request(MyUrl, callback=self.mydetail)
  yield request
  def mydetail(self, response):
      item['Description'] = response.xpath(".//table[@class='list']//text()").extract()
      return item
  </code></pre>
  
  <p>The URL seems to take minimum 5 seconds to load. So I want Scrapy to wait for some time to load the entire text in item['Description'].
  I tried "DOWNLOAD_DELAY" in settings.py but no use.</p>