added pry and awesome_print
add Boards model. add board_nums to boards. add type to boards. limit length for board_nums in db. add index to type-board_nums
Merge branch 'master' of github.com:kolobock/guess_number

* 'master' of github.com:kolobock/guess_number:
  added layout stylesheets from railscasts.com
show board with numbers. add logic to guess "4"