Update README.md
Update adodb-session2.php

$ok value not set in DSN connections
Improve Compatibility of ADORecordSet_empty

Add functions to ADORecordSet_empty to improve comaptibility with
ADORecordSet.
Merge pull request #5 from hasnathan/recordset_empty_compat

Improve Compatibility of ADORecordSet_empty
Merge pull request #11 from evardsson/master

Improve Compatibility of ADORecordSet_empty