title: Add "Vertical Spacing" programmatically in swift
body: <p>I have an <code>UIImageView</code> that I've added programmatically and a button which has been added in a Storyboard. And now I need to add "Vertical Spacing" between them, but I don't know how to do it. Would be easy if I would have added <code>UIImageView</code> in storyboard: </p>
  
  <p><img src="https://i.stack.imgur.com/qnoMC.png" alt="enter image description here"></p>
  
  <p>How can i solve the problem ?</p>