Make a PR to vim

[tcheukueppo]

Hello,

I think we should add a colorscheme to vim for the sidef programming language, what do you think?

[trizen]

I think the Ruby colorscheme works pretty well in most cases.

But we can definitely try to modify the Ruby colorscheme for Sidef, but, unfortunately, I don't have the time at the moment to do so.

[tcheukueppo]

Cool, I'll be working on it whenever possible.