Added Crusher

Added block crusher. Textured. No GUI at current time.
Name change

core -> gui
Small update

Code format and MODID use instead of name to prevent GUI crash
Merge in feature-blast-furnace
Added GUI for Crusher - Currently Broken

GUI for crusher - causes crash currently
Merge branch 'master' into feature-crusher
Crusher - GUI, Functionality

Added functionality to the crusher. Working GUI. Clean ups and better
code
Crusher crafting recipe

Added a crafting recipe for the crusher.
Crusher texture fixes and animations

Added animation to block when running (metadata - Thank you @Hanse00).
Removed use of blast furnace texture.
Fixes for crusher and blast furnace

Added shift insert checker. Made blast furnace require dusts only. Fixed
crash
Fix - Machine stops

Machine now stops once there is a full stack in the output slot
Fix - Crusher texture

Crusher should now stop on the same texture as the off state texture
Merge pull request #17 from Hanse00/feature-crusher

Feature crusher