Mention in README.md that MySQL databases can be monitored.
Mention in README.md that MySQL databases can be monitored.

Also add an example config to monitor a database in the quickstart
(for sqlite).

DingaGa/django-prometheus,korfuri/django-prometheus,wangwanzhong/django-prometheus,obytes/django-prometheus,obytes/django-prometheus,wangwanzhong/django-prometheus,korfuri/django-prometheus,DingaGa/django-prometheus