Updated CodeIgniter version to 2.2.0

Signed-off-by: Geekita <info@geekita.com>
Merge branch '2.0-Development' of https://github.com/gocart/GoCart.git
Updated CodeIgniter version to 2.2.0

Signed-off-by: Geekita <info@geekita.com>
Merge branch 'master' of https://github.com/geekita/GoCart