Missing documentation for Ruby

[okuramasafumi]

https://michaelb.github.io/sniprun/sources/README.html#support-levels-and-languages
This page says Ruby is already supported, but there's no dedicated documentation for Ruby setup.

[michaelb]

Indeed, humm it's a oversight but at the same time no config options for the Ruby interpreter are available.

I'll push a mostly-empty page for ruby though