chore(package): update coveralls to version 2.13.1 (#444)
chore(package): update coveralls to version 2.13.1 (#444)

https://greenkeeper.io/
binsee/wechaty,Chatie/wechaty,mukaiu/wechaty,wechaty/wechaty,mukaiu/wechaty,wechaty/wechaty,zixia/wechaty,binsee/wechaty,lijiarui/wechaty,mukaiu/wechaty,wechaty/wechaty,Chatie/wechaty,binsee/wechaty,lijiarui/wechaty,Chatie/wechaty,zixia/wechaty