title: Initializer does not override a designed initializer from its superclass error in swift
body: <p>When I opened my project that already had swift classes on Xcode 6.3.2, it shows an error. I would like you to help me in order to solve this problem. Thank you.</p>
  
  <p><img src="https://i.stack.imgur.com/78ILT.png" alt="enter image description here"></p>
  
  <p><img src="https://i.stack.imgur.com/i8tKe.png" alt="enter image description here"></p>