raw.githack.com
This is the source code behind raw.githack.com.
The idea of this service is inspired from rawgit.com. I thought that use the whole framework (node.js with express.js) for such a simple thing as requests proxying is overkill and made the same stuff using nginx only.
This is also a game: I am trying to implement the same functionality using nginx config files only. No programming languages allowed. Come join me!