Add this usage example?

[sdwolfz]

Hello,

I've created this repo with an example of using erlang_nif-sys with a simple erlang project: https://github.com/sdwolf/rustfromerl

It features:

• a Dockerfile for setting up the environment with the latest stable versions of erlang and rust.
• a rebar3 project
• automatic compilation of rust nifs with the help of this rebar3 plugin: https://github.com/sdwolf/rebar3_rust
• a matrix multiplication module with functions written in both languages to show performance difference.

Would you be interested in adding this to the examples? If yes I can create a PR.

Cheers!

[goertzenator]

Absolutely! I have some comments but I'll put them on your repo.