It is a very simple chatbot built with the help of Botman (botman/botman).
It could be used as an example for anyone who just wants to download a ready botman example and start playing with the library.
... you could just clone this repo and run
composer install
in the root folder and then run:
php -S localhost:8000 -t web/
This way you would have the example running if you have php installed and you could test it by navigating to:
http://localhost:8000/widget.php
in your browser.
Have nice time with the Mira bot!