Provide an installation option without CocoaPods

Dear authors,

Currently, there is only one way how you can add this project to iOS app (using CocoaPods). As a JavaScript / React Native developer, I'd like to be able to install this awesome library using react-native install or link it by using react-native link. Although it's not hard to do, the code won't work with a standard react-native init app due to the current way it imports React (using import React in Swift files).

I managed to make it work without these imports (by adding native-navigation library directly to the project), but I consider this way pretty hackish as I have to remove these imports by hand. I'd like to find a way how we can distribute a Cocoa pod using CocoaPods and npm module using the same codebase. The best thing I can think of is a pre-publish hook that cuts off imports before publishing (tmp dir -> s/import React//g -> publish files from tmp dir -> rm tmp dir).

What do you think?