Merge pull request #1 from markoheijnen/kurtpayne

Fix PDO bugs, add ability to remove db.php drop-in, added uninstall/deactivate methods and switching to  $wp_filesystem
Cleanup readme.txt
Make driver::query() return the $return_val
MySQLi: Check if result is an object
Update readme file
Some spacing between current driver and remove button
Merge pull request #3 from markoheijnen/Fix-mysqli

Fix MySQLi driver
Merge pull request #2 from markoheijnen/kurtpayne

Fix unused variable reference
Lets release today :)
Update version numbers
First pass at an emergency override switch to fix a broken site without FTP.