Add coding standards for PHP #18
Description
I think if would be helpful if this respository contained PHPCS and a coding standard and installed PHPCS.
We have a coding standard that is based on the HumanMade coding standard but with some tweaks to make it a bit more forgiving.
This repository does not contain a theme or have any opinions about the front-end of WordPress so I do not think it should include any JS or CSS linting by default.