title: add timestamp at end of url with .htaccess
body: <p>i have a wordpress site and want to add a timestamp in url like this: </p>
  
  <p>date,hour,minutes at end of my url (?201503291854) example:</p>
  
  <pre><code>example.com/pagename?201503291854 
  
  example.com/page/2/?201503291854 
  </code></pre>
  
  <p>but if user visit the url
  with 1854 at end and if time now is 19:00
  link will be     </p>
  
  <pre><code>example.com/pagename?201503291900
  </code></pre>