Earlier quoted context omitted.
Perhaps it would be more productive to advocate the use of local pre-commit hooks. Git makes it very easy to configure validation locally long before anything gets sent to Github. Would be nice if Github provided better documentation and a selection of validation templates to include in new projects. This would better leverage the power of Git and its distributed nature than a bot running on Github.
I'll look for more on this, but if you had something you would recommend as a tutorial, I'd appreciate it.
For some reference material check out:
http://book.git-scm.com/5_git_hooks.html
http://progit.org/book/ch7-3.html
And a couple simple examples: http://mark-story.com/posts/view/using-git-commit-hooks-to-prevent-stupid-mistakes
https://github.com/ReekenX/git-php-syntax-checker