expandFiles has been deprecated

After upgrading to grunt 0.4.0, grunt-jade aborted with this message:

    Running "jade:web" (jade) task
    Warning: Object #<Object> has no method 'expandFiles' Use --force to continue.
    Aborted due to warnings.

"Removed file.expandFiles and file.expandDirs methods, use the filter option of file.expand instead." - http://gruntjs.com/upgrading-from-0.3-to-0.4

This change fixed the issue and grunt-jade is now working for me on grunt v0.4.0