Are we allowed to link files directly from Github ?
<link rel="stylesheet" href="https://raw.github.com/username/project/master/style.css"/>
<script src="https://raw.github.com/username/project/master/script.js"></script>
I know this is allowed on Google Code. This way I don't have to worry about updating a local file.
The great service RawGit was already mentioned, but I'll throw another into the ring: GitCDN.link
Benefits:
Full disclosure, I'm a project maintainer at GitCDN.link