remove wechaty dependence from npm install (#500)
remove wechaty dependence from npm install (#500)

lijiarui/wechaty,Chatie/wechaty,wechaty/wechaty,Chatie/wechaty,zixia/wechaty,binsee/wechaty,binsee/wechaty,lijiarui/wechaty,mukaiu/wechaty,wechaty/wechaty,binsee/wechaty,mukaiu/wechaty,Chatie/wechaty,wechaty/wechaty,mukaiu/wechaty,zixia/wechaty