Swift adding custom window

To show finger touches in iOS apps, wanted to integrate https://github.com/eumlab/EUMTouchPointView

Added the code to iOS project in Swift, but for some reason bridging header option did not popup. So had to do it using following steps

http://www.learnswiftonline.com/getting-started/adding-swift-bridging-header/

Found this useful code to provide a custom window in AppDelegate class in Swift

https://github.com/mattneub/Programming-iOS-Book-Examples/blob/master/bk2ch01p006customWindowInStoryboardApp/ch14p366customWindowInStoryboardApp/AppDelegate.swift