title: Set scrollview size and position by code
body: <p>I've added a scrollView in Main.storyboard and made it the same size as the view and set the backgroundcolor to blue. 
  But I'm having troubles with autolayout so I'm trying to deactivate the constraints by code (succeeded) and set the frame position and size with the following code inside viewDidLoad()</p>
  
  <pre><code>NSLayoutConstraint.deactivateConstraints(self.view.constraints())
  
  self.scrollView.frame = CGRectMake(0.0, 100.0, 200.0, 200.0)
  self.scrollView.backgroundColor = (UIColor.redColor())
  </code></pre>
  
  <p>When I run the code the colour changes to red (so I've got that going for me, which is nice) but the scrollView doesn't change position or size.
  What is the right syntax to do this?</p>