MariaDB support in documentation?

Hello, does sails support MariaDB? I noticed that MySQL is mentioned in the [README](https://github.com/balderdashy/sails/blob/master/README.md) and e.g. on the [available adapters](https://sailsjs.com/documentation/concepts/extending-sails/adapters/available-adapters) docs page. Any reason not to add MariaDB? Its the default in most distros so only seems fair, and it eliminates any doubts about compatibility.

Start with the MariaDB question in README and the available adapters documentation page linked in the issue. Check how MySQL is described and determine whether MariaDB compatibility is established; done means the documentation clearly states the supported status and removes the reported uncertainty.

Written by the indexing model from the issue text.