Bookmarklet Loader is a template bookmarklet that injects your app’s .js and .css into the current page when clicked. You can grab the code on GitHub:
Bookmarklet Loader is written in CoffeeScript, however bookmarklets must be JavaScript and URL encoded. CoffeeMarklet does a great job of converting CoffeeScript to bookmarklet-friendly JavaScript. I recommend you use it to generate your bookmarklet once you’ve configured Bookmarklet Loader.
Happy Holidays!