title: How to perform self.view.frame.size.width using storyboard in iOS for Xcode 6?
body: <p>I want set sub view's width same as super view's width. Programmatically using <code>self.view.frame.size.width</code> we can assign in <code>CGRectMake</code>. </p>
  
  <p>But, how to do the same using storyboard? If it is possible using constraints then list steps for it.</p>