CritKing

- Added option to enable or disable sound effects when hit critical or kill enemy

 /ck critsound on / off - enable or disable sound effect when hit crit

 /ck killsound on / off - enable or disable sound effect when kill enemy

 /ck sound on / off - enable or disable sound effect when hit crit or kill enemy

- Added statistic for sum of critical and sum of kills

 /ck fullreset - reset all crit and kill counter (saved statistics too)

- Added a small achievement system, only for crit

 /ck ach critsound on / off - enable or disable sound effect when reach an achievement 

- Simple ck command show more information, and changed the color

 /ck