Fix foodcritic failures under new gating

Added test/test.sh to run footcritic/tailor/knife
Fixed tailor errors
Fixed foodcritic error
Remove/Ignore metadata.json for metadata.rb
Add name to metadata.rb
Merge pull request #4 from claco/foodcritic

Merged automatically by jenkins after successful build test
Add contribution guidance

Add CONTRIBUTING.md that points to the same document in chef-cookbooks
Add mention of the contribution document in the top of the README.md
Merge pull request #3 from claco/contributing

Merged automatically by jenkins after successful build test