title: how to replace # sign word into link tag
body: <p>How to replace <code>#</code> sign word with a <strong>link tag</strong> in this string.</p>
  
  <blockquote>
    <p>Lorem ipsum dolor sit #amet, consectetur adipisicing elit. 
        Veritatis #voluptatem quas atque sunt nemo cupiditate 
        #tempora nisi aperiam #ipsam exercitationem!</p>
  </blockquote>
  
  <p>I want to convert it into</p>
  
  <blockquote>
    <p>Lorem ipsum dolor sit <a href="http://demo.com" rel="nofollow">#amet</a>, 
        consectetur adipisicing elit. Veritatis <a href="http://demo.com" rel="nofollow">#voluptatem</a> 
        quas atque sunt nemo cupiditate <a href="http://demo.com" rel="nofollow">#tempora</a> nisi aperiam <a href="http://demo.com" rel="nofollow">#ipsam</a> exercitationem!</p>
  </blockquote>