Add Github Pages link

[lalten]

I wanted to use the stylesheet in Gingkoapp, so I created a Github Pages thing.

[sgalal]

Also have a look at this fork, which uses JSDelivr (gh).

[slashfoo]

Thanks for the suggestions, I'll keep this repository for download+offline use. I could add a mention to your forks if you'd like.

[sgalal]

That would be great if you could mention my fork ;-)

[slashfoo]

Alright, I'll keep this issue open until I link to both forks, and will leave this repo unchanged for the time being.