Update README.md

Author: lakhansamani

README.md

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   Authorizer
 </h1>
 
-**Authorizer** is an open-source authentication and authorization solution for your applications. Bring your database and have complete control over the user information. You can self-host authorizer instances and connect to any database.
+**Authorizer** is an open-source authentication and authorization solution for your applications. Bring your database and have complete control over the user information. You can self-host authorizer instances and connect to any database (Currently supports [Postgres](https://www.postgresql.org/), [MySQL](https://www.mysql.com/), [SQLite](https://www.sqlite.org/index.html), [SQLServer](https://www.microsoft.com/en-us/sql-server/), [ArangoDB](https://www.arangodb.com/)).
 
 ## Table of contents