title: Slick-Slider: Show hide slides
body: <p>How can you show/ hide slides based on a condition 
  Example: A button outside the slider, which shows/hides (toogles) the second slide.</p>
  
  <p>I found the <strong>Add &amp; Remove</strong> function in the documention ( <a href="http://kenwheeler.github.io/slick/" rel="nofollow noreferrer">http://kenwheeler.github.io/slick/</a> ), but this removes the complete slide and I can't get it anymore.</p>
  
  <p>Is there a simple solution?</p>