1.  To Install, extract this archive and copy the folder
	`sql_global_addressbooks` into `%roundcube/plugins/`

2.  Choose one of the SQL Scripts from `./SQL/`, dependant on your Mail System
	and whether or not you wish to have Alias Support, [%name%+alias.sql]
	or you would like just to have the primary emails, [%name%.sql]
	and run it on your MySQL/MariaDB Server as root, for example from PHPMyAdmin

3.  And then add `sql_global_addressbooks` to your `roundcube/config/config.inc.php`
	`$config['plugins'] = array(..., 'sql_global_addressbooks');`

4.  Rename `%roundcube/plugins/sql_global_addressbooks/config.inc.php.dist` to
	`config.inc.php` and fill in the configuration file.