title: get only a part of text() with xpath
body: <p>I'm trying to get the array of authors of this website:</p>
  
  <p><a href="http://www.intechopen.com/books/latest/1/list" rel="nofollow">http://www.intechopen.com/books/latest/1/list</a></p>
  
  <p>with this xpath:</p>
  
  <pre><code>response.xpath("//div[@id='sizer']/div[@id='content']/div[@class='grid']/div[@class='main-content']/div[@id='tc']/div/ul[@class='book-listing entity-listing']/li/dl/dd[@class='meta']/text()[count(preceding-sibling::br) = 0]").extract()
  </code></pre>
  
  <p>but i want only the names, without the "editor", how can I do it?</p>