Namespace change + Little bit of Javadoc

Hi,

This pull request will fix #91 by changing the default namespace. It also adds the URL to the mcmod.info URL listing. 

I tested this in client-only mode, and it it working fine - I haven't tested it on a server yet, however. I can do that tomorrow if you'd like

I got bored and documented three classes, 

1: CarpentersBlocks
2: ICarpentersChisel
3: ICarpentersHammer

I'd do more, but I really need to go to sleep. Sorry :(