Patch for COOK-2096

Added support for a Windows-compatible default path in the default attributes file.
Merge pull request #9 from charlesjohnson/COOK-2096

Patch for COOK-2096
Fixes COOK-1918

* owner/group aren't necessary on Unix/Linux as the default plugin
path requires running as root.
* guard mode so it isn't set on windows
* COOK-2096 (merged recently) added logic to set the path on Windows,
resolving the other part of the COOK-1918 ticket
release v1.1.8