Add Core Image filters to photo capture.
This is a companion discussion topic for the original entry at https://www.raywenderlich.com/4001919-how-to-make-an-app-like-instagram-in-ios/lessons/37
This is a companion discussion topic for the original entry at https://www.raywenderlich.com/4001919-how-to-make-an-app-like-instagram-in-ios/lessons/37