Updated lessphp to the latest stable version.
Merge branch '3.2/develop' of https://github.com/ryross/minify into 3.2/develop
Integrated a driver system.
Using submodules for minification drivers, so you may choose your custom driver from the configuration.
Options for drivers, for more customization.
Added documentation and references to submodule projects.

Conflicts:
	classes/minify.php
Added CSSTidy (experimental).
Merge pull request #3 from arteymix/3.2/develop

3.2/develop