Release 0.1.0

Release 0.1.0 / 2015-05-07

New features:

• Updated the Ruby required version to 1.9.3.
• Updated the rest_client required version to 1.7.0.
• Added wipe_after_delete flag for volumes.
• Added comment attribute to VMs.
• Added clone attribute to VMs in order to support creation of full
  clones.
• Added ha_priority attribute to VMs.
• Added support for the top level disks collection (also known as
  floating disks).
• Added alias attribute to volumes.
• Added support for affinity groups.