Remove obsolete defining of `settings.on_production_server`.
Putting all of the `.Bundle`, `.Compile`, `.Minify` methods on the `Node` base class to prevent the need to redefine them all over the place.  Also allows more flexible changing.
Massively re-working the whole thing.
Each of settings.ASSET_PIPELINES is now a dict, making it easily referencable by the template tag without hackery.  And   is an  of  mappings. Each step of the pipeline just modifies this dict. Closure compiler needs fixing.
Adding a README, TODO and some comments.