cache-with-yuicompressor

https://github.com/amolk/cache-with-yuicompressor

"This gem sets up javascript and CSS bundle file compression using the YUI Compressor. For example, using [javascript_include_tag "prototype", "cart", "checkout", :cache => "shop"] creates a combined javascript file named shop.js. With this gem, YUI compressor will also be run on shop.js, resulting in a smaller, obfuscated file."