first commit
#board_setup works
Update Boardnode instance vars, update Boardnode#to_s
move #children to Boardnode, add #children_with_bombs to Boardnode, #children returns objs, not arrays
take_turn ends if selected node is a bomb
update #children_with_bombs so that successive calls don't increment a node's child bomb count, #take_turn not yet complete, only examines neighbors
recursing in #reveal_from.
start adding save/load functionality. game plays, and is winnable. hoooooooooray
Added save_game1
Merge branch 'master' of https://github.com/teixeir3/W2D1