title: Telegram bot inline keyboard via Node.JS
body: <p>I'm using the <strong>node-telegram-bot-api</strong> module,
  How can I make my keyboard to inline Keyboard?
  This is my code:</p>
  
  <pre class="lang-js prettyprint-override"><code>bot.onText(/^\/start$/, function (msg) {
      const opts = {
          reply_to_message_id: msg.message_id,
          reply_markup: {
              resize_keyboard: true,
              one_time_keyboard: true,
              keyboard: [ ['Level 1'] ]
          }
      };
  
      bot.sendMessage(msg.chat.id, "I'm a test robot", opts);
  });
  </code></pre>