Turing's papers on the subject formed part of the research for my dissertation project, which culminated in a Matlab simulation of the skin patterns he described with inhibitors/activators.

I recently converted it to JS and also Ruby, as an excuse for a few coding exercises. It's still a work in progress, but can be found here:

https://github.com/rai-hi/rails-skin-patterning

Demo here:

https://skin-simulator.herokuapp.com/