title: How to hide a button in Xcode 6?
body: <p>All I want to do is keep a button hidden until another button is pressed.</p>
  
  <p>For example, Button 1 is visible, but Button 2 isn't. When I press Button 1, I need Button 2 to appear.</p>
  
  <p>Also, I am programming in Xcode 6 using Swift.</p>
  
  <p>Thanks in advance!</p>