Add initial support for games

Notes:

  Merge branch 'support-games' of https://github.com/jishnu7/node-telegram-bot-api into pr/201

References:

  * PR #201: https://github.com/yagop/node-telegram-bot-api/pull/201

README.md

@@ -92,6 +92,8 @@ TelegramBot
     * [.getChatMembersCount(chatId)](#TelegramBot+getChatMembersCount) ⇒ <code>Promise</code>
     * [.getChatMember(chatId, userId)](#TelegramBot+getChatMember) ⇒ <code>Promise</code>
     * [.leaveChat(chatId)](#TelegramBot+leaveChat) ⇒ <code>Promise</code>
+    * [.sendGame(chatId, gameShortName, [options])](#TelegramBot+sendGame) ⇒ <code>Promise</code>
+    * [.setGameScore(userId, score, [options])](#TelegramBot+setGameScore) ⇒ <code>Promise</code>
 
 <a name="new_TelegramBot_new"></a>
 
@@ -585,4 +587,32 @@ 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+sendGame"></a>
+
+### telegramBot.sendGame(chatId, gameShortName, [options]) ⇒ <code>Promise</code>
+Use this method to send a game.
+
+**Kind**: instance method of <code>[TelegramBot](#TelegramBot)</code>  
+**See**: https://core.telegram.org/bots/api#sendgame  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| chatId | <code>Number</code> &#124; <code>String</code> | Unique identifier for the message recipient |
+| gameShortName | <code>String</code> | name of the game to be sent. |
+| [options] | <code>Object</code> | Additional Telegram query options |
+
+<a name="TelegramBot+setGameScore"></a>
+
+### telegramBot.setGameScore(userId, score, [options]) ⇒ <code>Promise</code>
+Use this method to set the score of the specified user in a game.
+
+**Kind**: instance method of <code>[TelegramBot](#TelegramBot)</code>  
+**See**: https://core.telegram.org/bots/api#setgamescore  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| userId | <code>String</code> | Unique identifier of the target user |
+| score | <code>Number</code> | New score value. |
+| [options] | <code>Object</code> | Additional Telegram query options |
+
 * * *

src/telegram.js

@@ -809,6 +809,34 @@ class TelegramBot extends EventEmitter {
     };
     return this._request('leaveChat', { form });
   }
+
+  /**
+   * Use this method to send a game.
+   * @param  {Number|String} chatId Unique identifier for the message recipient
+   * @param  {String} gameShortName name of the game to be sent.
+   * @param  {Object} [options] Additional Telegram query options
+   * @return {Promise}
+   * @see https://core.telegram.org/bots/api#sendgame
+   */
+  sendGame(chatId, gameShortName, form = {}) {
+    form.chat_id = chatId;
+    form.game_short_name = gameShortName;
+    return this._request('sendGame', { form });
+  }
+
+  /**
+   * Use this method to set the score of the specified user in a game.
+   * @param  {String} userId  Unique identifier of the target user
+   * @param  {Number} score New score value.
+   * @param  {Object} [options] Additional Telegram query options
+   * @return {Promise}
+   * @see https://core.telegram.org/bots/api#setgamescore
+   */
+  setGameScore(userId, score, form = {}) {
+    form.user_id = userId;
+    form.score = score;
+    return this._request('setGameScore', { form });
+  }
 }
 
 module.exports = TelegramBot;