support for multiple versions of a js-lib; updated docs (more needed); standard rake task input
cleaner api for getting the cached url
bug fix for actual Rails env -- added spec
update gem to resolve deprecation warning for rails 2.3.12
Merge pull request #2 from JayTeeSF/master

Hey Jonathan,

I know it's been awhile since responding (I've been out of the community for a bit) - just reviewed your changes, they look great! Finally merging it in :)

Thanks for the contribution!

- Vann