title: Calling awakeFromNib of superclass
body: <p>I installed Xcode 8.0 beta (8S128d). Now I have some warnings with message:</p>
  
  <pre><code>Method possibly missing a [super awakeFromNib] call
  </code></pre>
  
  <p>in all <code>awakeFromNib</code> methods.
  In which case I need to call this method of superclass?</p>