The idea is simple: reload all CSS files on a web page if a file changes in a specified directory.
npm install -g web-reloader
web-reloader app/assets # or the directory of your choosing
And add the following to your HTML:
<script src="http://localhost:13337/"></script>
Open files, change and save away!
Don't want weird HTML tags floating about in your code? You can use this as a bookmarklet to activate the code.
javascript:var a = document.createElement("script"); a.src = "http://localhost:13337/"; document.body.appendChild(a); void 0;