update doc
update doc

CendyLee/SlipHover,AntTech/SlipHover,Jeremy017/SlipHover,AntTech/SlipHover,Jeremy017/SlipHover,wayou/SlipHover,thinkerchan/SlipHover,CendyLee/SlipHover,SebastianTroc/SlipHover,SebastianTroc/SlipHover,thinkerchan/SlipHover