add locally stored custom css/js

[MaxBr5]

Due to the unpredictability of
gists, I would like locally
stored CSS and JS as an option
and I'm not asking for much.

[gillyspy]

Due to the unpredictability of
gists, I would like locally
stored CSS and JS as an option
and I'm not asking for much.

this is how it already works. You just need to serve those locally stored files through a webserver and the docs provide how to do that. Note that i'm using https://github.com/terreng/simple-web-server which i think is better than the one in the docs.