sitefuel

https://github.com/wkm/sitefuel

SiteFuel is a Ruby program and lightweight API for processing the source code behind your static and dynamic websites. SiteFuel can remove comments and unneeded whitespace from your CSS, HTML, and JavaScript files (as well as fragments in RHTML and PHP) files. It can also losslessly compress your PNG and JPEG images. SiteFuel can also deploy your website from SVN or GIT. Support for more formats and repositories is planned for future versions.