add API docs Chinese version

docusaurus/i18n/zh/docusaurus-plugin-content-docs/current/api/contact-self.md

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+---
+title: ContactSelf
+---
+
+机器人自己的信息将会封装一个ContactSelf 类。这个类继承自 Contact。
+
+## ContactSelf
+
+> 备注：这个类继承自 Contact
+
+**Kind**: global class
+
+* [ContactSelf](contact-self.md#contactself)
+  * [intance](contact-self.md#contactself)
+    * [contactSelf.avatar\(\[file\]\) ⇒ `Promise <void | FileBox>`](contact-self.md#contactselfavatarfile-⇒-promise)
+    * [contactSelf.qrcode\(\) ⇒ `Promise <string>`](contact-self.md#contactselfqrcode-⇒-promise)
+    * [contactSelf.signature\(signature\) ⇒ `Promise <string>`](contact-self.md#contactselfsignaturesignature)
+    * [contactSelf.name\(\[name\]\) ⇒ `Promise <void> | string`](contact-self.md#contactselfname-⇒-promisestring)
+
+### contactSelf.avatar\(\[file\]\) ⇒ `Promise <void | FileBox>`
+
+设置机器人的头像
+
+**Kind**: [`ContactSelf`](contact-self.md#ContactSelf)的实例方法
+
+| Param | Type |
+| :--- | :--- |
+| \[file\] | `FileBox` |
+
+**示例** _\( GET the avatar for bot, return {Promise&lt;FileBox&gt;}\)_
+
+```javascript
+bot.on('login', async user => {
+  console.log(`user ${user} login`)
+  const file = await user.avatar()
+  const name = file.name
+  await file.toFile(name, true)
+  console.log(`Save bot avatar: ${user.name()} with avatar file: ${name}`)
+})
+```
+
+**示例** _\(SET the avatar for a bot\)_
+
+```javascript
+import { FileBox }  from 'file-box'
+bot.on('login', user => {
+  console.log(`user ${user} login`)
+  const fileBox = FileBox.fromUrl('https://wechaty.github.io/wechaty/images/bot-qr-code.png')
+  await user.avatar(fileBox)
+  console.log(`Change bot avatar successfully!`)
+})
+```
+
+### contactSelf.qrcode\(\) ⇒ `Promise <string>`
+
+获取机器人的二维码。
+
+**Kind**: [`ContactSelf`](contact-self.md#ContactSelf)的实例方法
+
+#### 示例
+
+```javascript
+import { generate } from 'qrcode-terminal'
+bot.on('login', async user => {
+  console.log(`user ${user} login`)
+  const qrcode = await user.qrcode()
+  console.log(`Following is the bot qrcode!`)
+  generate(qrcode, { small: true })
+})
+```
+
+### contactSelf.signature\(signature\) ⇒ `Promise <void>`
+
+修改机器人签名。
+
+**Kind**: [`ContactSelf`](contact-self.md#ContactSelf)的实例方法
+
+| Param | Description |
+| :--- | :--- |
+| signature | 机器人要修改的签名内容 |
+
+#### 示例
+
+```javascript
+bot.on('login', async user => {
+  console.log(`user ${user} login`)
+  try {
+    await user.signature(`Signature changed by wechaty on ${new Date()}`)
+  } catch (e) {
+    console.error('change signature failed', e)
+  }
+})
+```
+
+### contactSelf.name\(\[name\]\) ⇒ `Promise<void> | string`
+
+修改机器人昵称。
+
+**Kind**: [`ContactSelf`](contact-self.md#contactself)的实例方法
+
+| Param | Description |
+| :--- | :--- |
+| \[name\] | 机器人要修改的昵称内容 |
+
+#### 示例
+
+```javascript
+bot.on('login', async user => {
+  console.log(`user ${user} login`)
+  const oldName = user.name() // get bot name
+  try {
+    await user.name(`${oldName}-${new Date().getTime()}`) // change bot name
+  } catch (e) {
+    console.error('change name failed', e)
+  }
+})
+```