title: How to design and display a UIView overlay
body: <p>Hi guys here is the question: i've a MapView with a button and i'd like to trigger that button with an overlay view that fill the entire screen (beside of the navigation bar).</p>
  
  <p>Is there a way i can design the overlay in Storyboard and connect it to the button with some kind of custom segue or i've to design it programmatically and also write the code for the animation??</p>
  
  <p>Thanks!</p>