Add volume_type input.
Cosmetic change to follow coding standards.
Set chef_handler/handler_path attribute being used in rspec.
Moved tune_attributes from being a 'let' memoized helper method to being a defined helper method that is evaluated each time it is called.
Updated dependency versions of rightscale_volume and rightscale_backup.
Bump up version and create CHANGELOG.md.
Change spec/tuning_spec back to using let for tune_attributes and use category[:memory] instead of node attribute.
Merge pull request #23 from rightscale-cookbooks/white_14_08_acu176106_vsphere_using_volume_type

Add volume_type input.