If your aim is to help people snazz up quick HTML pages, it would be helpful to have as simple URL to include the CSS. Something like watercss.com/light.css. This way, we don't even have to visit your GitHub to get the CDN URL. It'd save some time and make water.css the go-to for quick styling.
The author already provides a CDN url. If they are so inclined, creating a memorable url (perhaps even a shortlink) would help with styling quick and dirty projects. I don't think people are doing to be running massive websites using this library.
Business being the key term here - this kid is 13, and from what I can tell, doesn't make any money from this. How would it make sense for him to pay to have this available via CDN?
Add the code as a snippet or associate it with a keyboard shortcut in your text editor. Then it's literally trivial to add it to an html page regardless of the URL.
