Add collection delete to the new API.
Fix bug in collection delete, thanks to QuickCheck ;) .
Fix broken test case after async API change.
Changes based on code review.
Wipe out the old API and update the class names.
Wipe out the old API test cases.
Fix javadoc comments.
Add one more test case that needs to be removed.
Merge pull request #25 from orchestrate-io/cdm-0.3.0-coll-delete

Add collection delete to the new API.