Kotlin version of this repo

[Alfhir]

Hi Greg,
I'd like to kotlinize this code and blog about it. Would that be fair use?
I don't now much about Open Source and licensing, so please let me hear your opinion.

I don't want to piggyback on your work by simple copy & pasting code and let the IDE do the work.
I want to comment on why this and that is different in Kotlin. Also I want to challenge myself a bit and use Gradle for the first time.
That's why I'd rather not fork this repo, but link to your project in the README etc.
I'd tell people to buy your book, if I find the time to blog about it - I really enjoyed reading it!

What do you think?

Regards
Oliver