Arvados

Peter,
I incorporated most of your suggestions and did some major respinning and refactoring.
Please review and let me know any further comments.

The following are still pending:
- Using a test server when running the unit tests.
I will add this in the next day or so.
I did add logic to remove any objects created by the tests.

2. Did not wrap "java -cp target/java-1.0-SNAPSHOT-jar . . . " in a script.
I felt it is important that the users know how to setup classpath to work with SDK,
and the updated documentation is making it easy enough to work with.

3. I have added several unit tests. I might add some more as time permits.
Let me know if you see any specific / important missing test cases.

Thanks.
--Radhika

Addressed all feedback.