Last minute changes before another merge; adding API and power
systems...
Merge pull request #5 from general3214/master

Added block/item IDs to config
More power system stuff = more errors!
Update LICENSE

Changed the MIT license to the MMPL v1.0 because I am using a Buildcraft-based power system
More stuff
Register entities server-side
Added render/entity IDs to config

Cannot add GUI IDs; SC2_GuiHandler requires constant expression.
Merge branch 'master' of https://github.com/general3214/Steamcraft-2