Minor refactorings.
Went to a Groovy-centric configuration.
Include json-path.
Renamed the methods to match with what was used in the Spring HATEAOS documentation.
Added @EnableEntityLinks to the web configuration.
Added @ExposesResourceFor to the controller.
Added @EnableHypermediaSupport to the web configuration.
All the HATEOAS annotations are enabled.  Now I gotta learn how to use 'em.