* Feature/useraddtogroup: macos_user new property "groups" (#41)
* Add smoke test for new property "groups" for macos_user resource
* Add new macos_user that utilizes the new "groups" property
* Add new property for macos_user called "groups"
groups property will take a String or an Array
* Idempotent "machine_name" resource + docs
- This commit includes a revamped machine_name resource along with some other magical additions. The additions include a software_updates helper, abd a re-working of the `binary?` plist action_class method
- More realistic version bump
- Documentation for machine_name resource
- Better test for machine_name resource (fix macOS version test bug)
* update relative paths for documentation for Supermarket shoppers
* add backticks
* remove delivery; fix keep_awake idempotence bug
Eric Hanko