Thomas,
I recently found your module, good job.
Right now im thinkering with Electron and making Processwire to serve as a headless CMS. So your module is quite handy.
I forked the module on GitHub and made it a little bit more connected to Processwire. To sum things up, I creates a "Endpoint Container" in the page tree where you can add your routes and methods.
It still needs to add responding classes to provide content ;) I added a skeleton Class called "Blog" to get all contents under the "Home" Page or a specific Page via ID.
I created a Pull Request, maybe you like my approach.
https://github.com/Luis85/RestApi