Usage question / ReadMe improvements

[perqa]

My understanding from the current ReadMe for ignite-kryptonite is that it can be used to transform a React-based single-page web app into a React Native app. Is that correct?

The following is only valid if the above assumption is correct.
It is clear from the instructions how to install ignite-kryptonite, but how do I use it? How do I include an existing React-based SPA into the project? How do I add the necessary native components (iOS / Android)? More generally, what does ignite-kryptonite do exactly? It would be great with a more elaborate description of the project. Thanks for sharing the code on Github!