DATAREST-226 - Moved reference documentation into correct location.
DATAREST-226 - Added distribution module.
DATAREST-226 - Prepare 2.0 RC1 release.

Upgraded to Spring Data RC modules, Spring HATEOAS 0.9.0.RELEASE and Spring Plugin 1.0.0.RELEASE. Removed placeholder for Jackson 2 version as it's in the parent build pom now. Switched to milestone repository.
DATAREST-226 - Release version 2.0.0.RC1.
DATAREST-226 - Prepare next development iteration.