[COOK-3714] Powershell features provider and delete support.

Signed-off-by: Sean OMeara <someara@opscode.com>
Version bump to v1.12.0
Version bump to v1.12.0
adding changelog and metadata.rb
[COOK-4110] - fix to windows cookbook for servermanagercmd

Signed-off-by: Sean OMeara <someara@opscode.com>
Version bump to v1.12.2
Version bump to v1.12.3
updating metadata to depend on powershell
Fixes typo
Merge pull request #68 from carmstrong/patch-1

Fixes typo in depends powershell
Version bump to v1.12.4