Changed board data file format

This format is much simpler to work with for large boards.

It follows this basic format:
width,height
state1:x1,y1
state2:x2,y2
state3:x3,y3

Where 1, 2, 3 simply designate the 3 different points. For example

5,5
1:0,0
2:1,0
3:4,4

is a map of width/height 5,5 with the 0,0 coordinate set to 1, 1,0 set to 2, and 4,4 set to 3