Added simple and lightweight MCMMO support (does not take any resource if you don't use it; disabled by default).
I promise this does not take any resource if it's set to false in the config.yml (it is by default). You also won't be bothered if you're simply not using MCMMO. The plugin is still as lightweight as before!
* Please note: you will need build #2565 or higher for this plugin, otherwise it won't work! See dl.bukkit.org! *
