Due to requests I updated my TornadoFX-RxKotlin de...

# tornadofx

[thomasnield]

Due to requests I updated my TornadoFX-RxKotlin demo application to the latest dependencies. Feel free to suggest ways to further clean up the code and make it more idiomatic via PR's. https://github.com/thomasnield/rxkotlinfx-tornadofx-demo