Added prototype 'calculator table' code from tutorial
Fixed error with Calculator block's ID
Added prototype CalculatorRecipe
adds getIcon and registerIcon methods to Calculator class (commented out atm)
adds GuiHandler and Gui class for Calculator
diamond name displayed based on random itemDamageValue
Added recipes to CalculatorCraftingManager
Improved display of number names
-- removed various arrays of Strings
-- names generated directly from the metadata
Merge branch 'calc_1X3' into calculator
Removed screenshots from gitignore
Implemented correct CalculatorRecipe sorting
Made some progress on bug when closing a Calculator
implements calculation
creates 1x3 input matrix with one output
Merged work on calc_1X3
Removed screenshots from gitignore
Fixed #17
Fixed bug where calculations weren't giving the correct results
Minor tweaks to displayed names
adds stream line checking of calculator recipes