NetTuts.com: Easy Package Management for CodeIgniter with Sparks
Sparks is a new package-management system for CodeIgniter that extends the core with support for gem-like sparks. This tutorial interweaves an entry-level overview of the architecture and usage of the sparks system with the creation of dovecote-a simple spark for managing RSS data.
The tutorial introduces you to the Sparks system and helps you get it installed and configured to work with a first basic package - a dovecote example. He helps organize and write the first spark as well as set up any dependencies and autoloading it might need. He follows this by adding some functionality to the package to make pushing output to the view simpler.
You can download the source for the complete tutorial's code.