Merge pull request #36 from jeffswartz/v2.2-docs

revisions to readme file.
Merge pull request #37 from jeffswartz/v2.2-docs

readme file docs edits
adds tests for archive status unknown and unknown properties, fixes #38
Merge pull request #39 from aoberoi/issue-38

adds tests for archive status unknown and unknown properties, fixes #38
Docs corrections

- New archive status: expired.
- Support for Windows Azure contains for archive file uploads.
New generated reference docs.