Nested Associations

Nested association loading now works, associations and nested
associations can be enabled/disabled to have the same kinds/types of
routes as their parent model.

Models now also load their routes from three places.
In this order, with each successive one over-riding the previous.

Default
Sequelize-Model-Routes (You specify them when you define the model),
Custom Route Options (Passed as argument to REST Model when its
created.)

We're at version 0.4.0 now.... Soon it'll be done! (At least I have
planned the 1.0.0 for when its ready-for-production)