chore(package): update typescript to version 2.2.1 (#276)
chore(package): update typescript to version 2.2.1 (#276)

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