The GeoURL plugin add extra <meta> headers for certain pages that geourl.org
understands and pings geourl.org when those pages are created.

Note: The third-party service that this plugin depends on (geourl.org) seems to
be dead.

Installation
============
add "addPlugin('GeoURL');"
to the bottom of your config.php

Settings
========
none

Example
=======
addPlugin('GeoURL');