Fixed COOK-4414 added ChefSpec matchers

Added custom matchers for all Windows cookbook LWRPs, as suggested by Seth
https://github.com/sethvargo/chefspec/issues/372. This allows consumers of Windows cookbook LWRPs to much more easily write ChefSpec tests.
Merge pull request #74 from daptiv/COOK-4414

Fixed COOK-4414 added ChefSpec matchers