Automatically check programming style.

Implement PSR-2 check with PHP 5.2 style namespacing.

git-svn-id: http://textpattern.googlecode.com/svn/development/4.x@5755 2fea6a4d-a838-0410-917b-93a53c48e9d2
Add CONTRIBUTING stub.

git-svn-id: http://textpattern.googlecode.com/svn/development/4.x@5756 2fea6a4d-a838-0410-917b-93a53c48e9d2