add uninstaller for plugin interface (#1939)
add uninstaller for plugin interface (#1939)

zixia/wechaty,wechaty/wechaty,mukaiu/wechaty,mukaiu/wechaty,binsee/wechaty,binsee/wechaty,wechaty/wechaty,mukaiu/wechaty,zixia/wechaty,wechaty/wechaty,binsee/wechaty