clean doc

docs/index.md

-# Wechaty v0.19.4 Documentation
+# Wechaty v0.19.5 Documentation
 
 * <https://blog.chatie.io>
 
@@ -116,7 +116,6 @@ See more:
         * ~~[.self()](#Wechaty+self)~~
         * [.userSelf()](#Wechaty+userSelf) ⇒ <code>ContactSelf</code>
         * [.say(textOrContactOrFile)](#Wechaty+say) ⇒ <code>Promise.&lt;void&gt;</code>
-        * [.version([forceNpm])](#Wechaty+version) ⇒ <code>string</code>
     * _static_
         * [.instance([options])](#Wechaty.instance)
 
@@ -353,23 +352,6 @@ import { FileBox }  from 'file-box'
 const fileBox = FileBox.fromLocal('/tmp/text.jpg')
 await bot.say(fileBox)
 ```
-<a name="Wechaty+version"></a>
-
-### wechaty.version([forceNpm]) ⇒ <code>string</code>
-Return version of Wechaty
-
-**Kind**: instance method of [<code>Wechaty</code>](#Wechaty)  
-**Returns**: <code>string</code> - - the version number  
-
-| Param | Type | Default | Description |
-| --- | --- | --- | --- |
-| [forceNpm] | <code>boolean</code> | <code>false</code> | If set to true, will only return the version in package.json. </br>                                      Otherwise will return git commit hash if .git exists. |
-
-**Example**  
-```js
-console.log(Wechaty.instance().version())       // return '#git[af39df]'
-console.log(Wechaty.instance().version(true))   // return '0.7.9'
-```
 <a name="Wechaty.instance"></a>
 
 ### Wechaty.instance([options])

src/wechaty.ts

@@ -180,14 +180,14 @@ export class Wechaty extends Accessory implements Sayable {
   public readonly Room          : typeof Room
 
   /**
-   * get the singleton instance of Wechaty
+   * Get the global instance of Wechaty
    *
    * @param {WechatyOptions} [options={}]
    *
    * @example <caption>The World's Shortest ChatBot Code: 6 lines of JavaScript</caption>
    * const { Wechaty } = require('wechaty')
    *
-   * Wechaty.instance() // Singleton
+   * Wechaty.instance() // Global instance
    * .on('scan', (url, code) => console.log(`Scan QR Code to login: ${code}\n${url}`))
    * .on('login',       user => console.log(`User ${user} logined`))
    * .on('message',  message => console.log(`Message: ${message}`))
@@ -1007,7 +1007,7 @@ export class Wechaty extends Accessory implements Sayable {
   /**
    * @description
    * Should use {@link Wechaty#userSelf} instead
-   * @deprecated
+   * @deprecated Use `userSelf()` instead
    */
   public self(): Contact {
     log.warn('Wechaty', 'self() DEPRECATED. use userSelf() instead.')
@@ -1086,6 +1086,7 @@ export class Wechaty extends Accessory implements Sayable {
   }
 
  /**
+  * @private
   * Return version of Wechaty
   *
   * @param {boolean} [forceNpm=false]  - If set to true, will only return the version in package.json. </br>