Change how the loader works

Warning the loader now works in a different way, old versions worked in
an other way!

Upfated the readme with the new loader settings

Loader changes:
- loaders are now even more abstract, only the seperator is build in the
prefix/namescape loader

Prev
- dir + namespace = path
Now
- dir + (namescape - leader) = path
* leader = the key that is used to register the path

Example:
'Pnatter' => 'PATH/TO/PNATTER',
The leader here is Pnatter

With this update you can better change directories for individual
(sbub)namespaces/prefixes