DATAREST-258 - Prepare 2.0.1.RELEASE.
DATAREST-258 - Mitigate changes in Spring Data Neo4j 3.0.1.

We now explicitly set a base backage in the Neo4jConfiguration to make sure, the domain classes get added to the MappingContext upfront. Filed DATAGRAPH-448 [0] for some reasonable defaulting going forward.

[0] https://jira.spring.io/browse/DATAGRAPH-448