Brought in tutorial code.

See: https://github.com/joshlong/bookmarks
Merge branch 'develop' into feature/tutorial
Added link to tutorial in readme.
Added in configuration annotations.
Added package info placeholder files.
Fixed some hibernate errors seen in log.
Added in Rest Controller and Unit Test.

See: http://spring.io/guides/tutorials/bookmarks/
Removing warning seen during unit testing.

See: http://stackoverflow.com/a/15052288
Suppressing warning brought on by type erasure.
Refactored code to new package structure. bookmarks became com.joshlong.rest
Added in hateoas code.
Refactor and more hateoas code.
Merge branch 'feature/tutorial' into develop