Upgraded to Spring Data REST 1.1.0.BUILD-SNAPSHOT.

Adapted configuration and setup where necessary. Added additional required dependencies until SD REST fully works without them. Upgraded to Jackson 2. Made Payment a non-abstract class as SD REST tries to instantiate it on ApplicationContext bootstrap time. Removed custom serializers needed for JodaTime support, as SD REST ships with them out of the box. Added Accept header and ContentType header by default to integration test HTTP requests, as SD REST currently returns JsonP by default.

Expect that branch to be rebased repeatedly.