title: How to implement search bar like this?
body: <p>I would like to add a search bar above my collection view and when press it will show like the video showing .<a href="https://www.youtube.com/watch?v=mgS2Pzy5eJk" rel="nofollow">https://www.youtube.com/watch?v=mgS2Pzy5eJk</a> .Thanks.</p>