Added restart role to virtual machine and tests.
Added add disk command.
Added command for update endpoint and delete endpoint.
Unit test for add data disk.
Unit test for update endpoint
Unit test for delete endpoint.

Add options winrm_http_port and winrm_https_port to virtual machine.
Listing virtual machine images based on location
Added new command and upgraded to azure 0.6.4
Minor changes.
Text Changes
Added storage account.
Updated README
Unit test for storage accounts