#15

Refactored BoardUtilities and added in Regex to check for int
closes #16
#16
#16

This doesn't work either. Need to think about this...
#15

Redoing the scanner inputs. This changeset works. revisiting the logic
#15

need to check for local error in the yes-no switch statement
#15 finished GetValidNumberFromUser
#15

updated all references or try-catch-parse int
fixes #13
removed some stuff
cleaned up prompt