update all files & add InWords from TestFirstRuby
update w1d2 files
w1d3 work - hangman, mastermind, maze solver
w1d4 work - recursion and wordchain
w2d1 work - minesweeper needs work
w2d2 work - chess almost working
w2d3 work - chess working
w2d4 work - checkers (needs refactoring)
w2d5 work - poker w/ specs unfinished
w3d1 work - SQLZoo complete
w3d2 work - more SQL work
add readme file for w2d1