How to register Telegram bot:
- The guide for creating a new bot and get a new token for it https://core.telegram.org/bots#6-botfather
- Put this token to the TelegramMessenger app and launch the app.
- Edit the new bot in Telegram and add a new command /register to /setcommands for getting messages.
- Add the bot to some chat and type /register command.
- The bot is ready to send messages.