[COOK-1087] Update the CONTRIBUTING file to fix a minor typo
Preparing repository for splitting cookbooks into their own repos.
* Add a CONTRIBUTING file to each cookbook.
* Move the Changes/Roadmap section(s) to CHANGELOG.md.
* Create the Apache LICENSE file in each cookbook.
chef 0.10 doesn't need metadata.json
updated metadata in prep of release to cookbooks site.
added jetty cookbook