Correct the read me

[nousename]

This does not work

$db = new PDODb('host', 'username', 'password', 'databaseName');
It maps the parameters to the incorrect parts, the type is missing.
Which means it maps host to type

This works
$db = new PDODb('mysql', DBHost, DBUser, DBPassword, DBName);

This does
$db = new PDODb(['type' => 'mysql',
'host' => DBHost,
'username' => DBUser,
'password' => DBPassword,
'dbname'=> DBName,
'port' => 3306,
'prefix' => '',
'charset' => 'utf8']);