refactor methods out of computer class that should have been in tictactoe class, add computer#first_move tests
add class test for test_user
add test for user#place_token(position)
add User#last_spot_needed tests
rename constants, refactor part of last_spot_needed
refactor parts of last_spot_needed
refactor last_spot_needed into a few smaller methods
refactor let statement for :tie_game
refactor let statements
add test for ttt#open_spots
refactor before each in ttt spec so that has pre-made board with tokens
add open_edges test
add tests for open_corners and user_corner_moves
add test for poss_edge_fork
add to readme, clean up files, get rid of whitespace
Merge pull request #3 from anniesing/add-computer-tests

Add tests for all models except Controller