initial api for connect four game.

Signed-off-by: Dan Conner <im@danmarvelo.us>
indicating turn status in browser.

Signed-off-by: Dan Conner <im@danmarvelo.us>
show turns played by each player.

Signed-off-by: Dan Conner <im@danmarvelo.us>
use 'bitboard' to store game state and determine whether a win exists.

Signed-off-by: Dan Conner <im@danmarvelo.us>
make game move/win changes to move.php.

Signed-off-by: Dan Conner <im@danmarvelo.us>
append newlines to responses in move.php

Signed-off-by: Dan Conner <im@danmarvelo.us>