clean up some stuff
more cleanup
start strategy
add getMoveNo function to strategy
add some basic strategy for X
create tttCells
get rid of tttCells

will add functions to grid instead
move getMoveNo function to grid
added isMarked() function to grid
add findWinningMoveFor(), refactor grid
add test helper, grid functions, X strategy
refactor grid
add some strategy tests
remove tttCell.js and test files
finish the strategy
add game mode
ad computer player
finish functionality