add special character screening mechaism
by using anup's regular expression
STUPIDROBOT - enable the nlp screening
by using the nlp api
STUPIDROBOT - add done button
so that we can quit the whole round in the middle of the game
Merge branch 'master' of https://github.com/jack2684/mg-game into jack2684-master
STUPID ROBOT - update game text
STUPID ROBOT - adjust game feedback font size