doc: Generate API reference, Update changelog

CHANGELOG.md

@@ -9,6 +9,7 @@ Added:
 
 1. Add Bot API v3.4 methods:
   * (#439) *TelegramBot#editMessageLiveLocation*, *TelegramBot#stopMessageLiveLocation* (by @kamikazechaser)
+  * (#440) *TelegramBot#setChatStickerSet*, *TelegramBot#deleteChatStickerSet* (by @kamikazechaser)
 1. Add `metadata` argument in `message` event (and
    friends e.g. `text`, `audio`, etc.) (#409) (by @jlsjonas, @GochoMugo)
 1. Add support for Node.js v9 (by @GochoMugo)

doc/api.md

@@ -71,6 +71,8 @@ TelegramBot
         * [.getChatMembersCount(chatId)](#TelegramBot+getChatMembersCount) ⇒ <code>Promise</code>
         * [.getChatMember(chatId, userId)](#TelegramBot+getChatMember) ⇒ <code>Promise</code>
         * [.leaveChat(chatId)](#TelegramBot+leaveChat) ⇒ <code>Promise</code>
+        * [.setChatStickerSet(chatId, stickerSetName)](#TelegramBot+setChatStickerSet) ⇒ <code>Promise</code>
+        * [.deleteChatStickerSet(chatId)](#TelegramBot+deleteChatStickerSet) ⇒ <code>Promise</code>
         * [.sendGame(chatId, gameShortName, [options])](#TelegramBot+sendGame) ⇒ <code>Promise</code>
         * [.setGameScore(userId, score, [options])](#TelegramBot+setGameScore) ⇒ <code>Promise</code>
         * [.getGameHighScores(userId, [options])](#TelegramBot+getGameHighScores) ⇒ <code>Promise</code>
@@ -935,6 +937,31 @@ Leave a group, supergroup or channel.
 | --- | --- | --- |
 | chatId | <code>Number</code> &#124; <code>String</code> | Unique identifier for the target group or username of the target supergroup (in the format @supergroupusername) |
 
+<a name="TelegramBot+setChatStickerSet"></a>
+
+### telegramBot.setChatStickerSet(chatId, stickerSetName) ⇒ <code>Promise</code>
+Use this method to set a new group sticker set for a supergroup.
+
+**Kind**: instance method of <code>[TelegramBot](#TelegramBot)</code>  
+**See**: https://core.telegram.org/bots/api#setchatstickerset  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| chatId | <code>Number</code> &#124; <code>String</code> | Unique identifier for the target group or username of the target supergroup (in the format @supergroupusername) |
+| stickerSetName | <code>String</code> | Name of the sticker set to be set as the group sticker set |
+
+<a name="TelegramBot+deleteChatStickerSet"></a>
+
+### telegramBot.deleteChatStickerSet(chatId) ⇒ <code>Promise</code>
+Use this method to delete a group sticker set from a supergroup.
+
+**Kind**: instance method of <code>[TelegramBot](#TelegramBot)</code>  
+**See**: https://core.telegram.org/bots/api#deletechatstickerset  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| chatId | <code>Number</code> &#124; <code>String</code> | Unique identifier for the target group or username of the target supergroup (in the format @supergroupusername) |
+
 <a name="TelegramBot+sendGame"></a>
 
 ### telegramBot.sendGame(chatId, gameShortName, [options]) ⇒ <code>Promise</code>