flatiron/revalidator — pull request #62 by seangarner (2014-02-05 23:27:50+00:00)
Title: add message for additionalProperties

the PR previously known as #51 makes a comeback

When validation fails because `additionalProperties: false` and there's an extraneous property it displays a generic message "no default message". This adds a message for additionalProperties that reads "must not exist".