A CONTRIBUTING.md file explains to new Jenkins contributors about the project standards for contributing.

This would be a great place to link to (if they exist)

• Java Style guide
• How do I run the Jenkins tests locally/ on Github? (I know Cloudbees runs these but you can mention this)
• Are tests required for my feature?
• Do I need to sign an agreement to contribute?
• Should I add my changes to a changelog, or add my name to a list of contributors?