title: //div[contain(@class, 'post-header')]
body: //div[contains(concat(' ',normalize-space(@class),' '),' post-body ')]
author: //a[contains(@class, 'author-link')]
date: //span[contains(@class, 'byline-date')]
  
test_url: http://blog.trello.com/how-to-set-better-life-goals
test_url: http://blog.trello.com/6-mistakes-when-you-work-in-office-but-have-remote-team-members