title: Telegram bot - OAuth authorization
body: <p>I want to implement OAuth authorization by Twitch API on my bot, and when I was looking for a better solution, I found this @GitHubBot. In this bot redirect URL starting for integrations.telegram.org/github, and I wonder how to implement auth like this. If you please, can you tell best practice to implement OAuth in telegram bots? What the better case: Authorization Code or Implicit Grant?<br>
  Thank you in advance!</p>