add docs & image

README.md

@@ -1,5 +1,68 @@
 # wechaty-puppet-hostie
 
+[![NPM Version](https://badge.fury.io/js/wechaty-puppet-hostie.svg)](https://www.npmjs.com/package/wechaty-puppet-hostie)
+![NPM](https://github.com/Chatie/grpc/workflows/NPM/badge.svg)
 [![Greenkeeper badge](https://badges.greenkeeper.io/Chatie/wechaty-puppet-hostie.svg)](https://greenkeeper.io/)
 
+![Hostie](https://wechaty.github.io/wechaty-puppet-hostie/images/hostie.png)
+
 Hostie Puppet for Wechaty
+
+## Features
+
+1. Consume hostie service
+1. Provide hostie service
+
+## Usage
+
+```ts
+import { Wechaty } from 'wechaty'
+
+const wechaty = new Wechaty({
+  puppet: 'wechaty-puppet-hostie',
+  puppetOptions: {
+    token: 'secret'
+  }
+})
+
+wechaty.start()
+```
+
+## Environment Variables
+
+### 1 `WECHATY_PUPPET_HOSTIE_TOKEN'
+
+The token set to this environment variable will become the default value of `puppetOptions.token`
+
+```sh
+WECHATY_PUPPET_HOSTIE_TOKEN=secret node bot.js
+```
+
+## History
+
+### master
+
+### v0.3 (Feb 2020)
+
+1. Publish the NPM module [wechaty-puppet-hostie](https://www.npmjs.com/package/wechaty-puppet-hostie)
+1. Implemented basic hostie features with gRPC module: [@chatie/grpc](https://github.com/Chatie/grpc)
+
+### v0.0.1 (Jun 2018)
+
+Designing the puppet hostie with the following protocols:
+
+1. [gRPC](https://grpc.io/)
+1. [JSON RPC](https://www.jsonrpc.org/)
+1. [OpenAPI/Swagger](https://swagger.io/docs/specification/about/)
+
+## Author
+
+[Huan LI](https://github.com/huan) ([李卓桓](http://linkedin.com/in/zixia)) [email protected]
+
+[![Profile of Huan LI (李卓桓) on StackOverflow](https://stackexchange.com/users/flair/265499.png)](https://stackexchange.com/users/265499)
+
+## Copyright & License
+
+* Code & Docs © 2018-now Huan LI \<[email protected]\>
+* Code released under the Apache-2.0 License
+* Docs released under Creative Commons