Unit test for auto generated winrm http/https port.
API add_data_disk lun is optional argument.
Cloud service should delete only if there are no other VMs/Deployments in the cloud service.
Moved add role functionality as separate API.
Added integration/unit tests for cloud service.
Updated Role Size.
Upgraded Service Management Versioning to 2014-04-01
ChangeLog update
Minor changes and bug fixes.
Merge pull request #140 from MSOpenTech/dev

Upgraded Service Management Versioning to 2014-04-01
Update ChangeLog.txt
Merge branch 'release-0.6.4' of https://github.com/WindowsAzure/azure-sdk-for-ruby into release-0.6.4
update version to 0.6.4
Merge pull request #142 from guangyang/release-0.6.4

Release 0.6.4
Merge pull request #143 from Azure/release-0.6.4

Release 0.6.4