I've made a swift version of the Unwind-Seque from https://github.com/versluis/Unwind-Segue.
All credits go to https://github.com/versluis for making the obj-c version. Thanks!
swift version by Martijn Onstwedder ( http://onstwedder.com )
original version by Jay Versluis ( http:pinkstone.co.uk )
The original objective-c code can be found here:
https://github.com/versluis/Unwind-Segue
Unwind Segue
iOS Project demonstrating how to use an Unwind Segue.
For more information and a step-by-step screencast, see Jay Versluis's companion article: http://pinkstone.co.uk/how-to-create-an-unwind-segue-in-ios-8/ or his great youtube tutorial: https://www.youtube.com/watch?v=aSV8t9wKayo