I have moved on from the current CodeIgniter release of 2.1.4 to version 3.0. You can download the latest development release at github . I have been using CodeIgniter 3.0 for a while now and it is very stable. I have seen a lot of posts asking about the the documentation for 3.0. Unfortunately , ellis labs have been dragging their feet on releasing version 3.0 and has decided to rid itself of the Codeigniter project . Codeigniter is the best thing that Ellis labs had going for them, too bad they do not realize it. I have decided to create a sub-domain host the 3.0 documentation. I hope this helps anyone trying to transition from 2.1.4 to 3.0.
CodeIgniter 3.0 Documentation – here