Added hhvm Dockerfile.
Cleaned up composer.json a bit. Added symfony console dependency and moved the dunit binary to a bin subfolder.
Beginning of a PHP rewrite of the dunit script.
More options loaded from environment variables and new config layout.
Dunit ported to PHP.
Added missing comment.
Dunit can now build as a phar.
Added 'Done.' indicator.
Updated binary and added application version.