Add support for checkstyle audit and failure at build-time, using a repository-specific checkstyle file copied from code.
While the checkstyle.config.location property does work witha  URL, this introduces a build-time dependency
on network access which I think is worse than have repository-specific style files in each repository.
If you disagree, the following value can be used for checkstyle.config.location, or perhaps it could be hosted on kaazing.org:
https://raw.githubusercontent.com/kaazing/code.quality/develop/src/main/resources/org/kaazing/code/quality/checkstyle.xml