Updates plugin URI to point to Wordpress instead of ran.ge

Having the ran.ge URI in the plugin information means that when a user
clicks on the `Visit plugin site` they are taken to http://ran.ge
instead of the actual Wordpress site with the plugin information.

![ran.ge](http://dl.dropbox.com/u/12554984/ea04.png)

Ideally clicking the link above would take to the page bellow, which contains plugin information (version, compatibility etc.)
![wordpress](http://dl.dropbox.com/u/12554984/8082.png)