reduce code for get current question category
rename the currentCategory funciton
add test for 5 players limit
rename
extract constant for question category
extract method move in roll
extract method for roll
extract class Player
move place,purse and in penalty box status to Player class
fix origin bug for max player limit 5
remove useless unit test
rename the player_limit test
extract class Question
extract method currentQuestion
remove replace if in askQuestion()
extract method initQuestion
add isWin() in Player
extract class QuestionStorage
move QuestionQueue to the question package
extract class QuestionCategory and QuestionFactory