Merge pull request #4 from panosru/patch-1
changed sys to util
changed `require('sys')` to `require('util')` I left the sys variable…
… as it is for compatibility reasons with the code.
Bump version and change dependencies.
Add UglifyJS as dependency, handler and add to readme.
Use JS port of Yahoo CSSmin instead of Java, update UglifyJS.
Added UglifyJS handler
Image fetches are now parallel, can fetch hot linked images, dropped …
…external base64 dependency.
Allow yui Compressor to be in post hook and fix path issues.
Changed gradient example
Fixed path to base64 encode
Changes to background gradient hook
Add link to readme