Vtiger - Building a simple extension module 
This repo presents a minimalistic structure for a basic extension module for Vtiger.
Usage
This code was made and tested under Vtiger 6.0.0 beta and it will NOT work under 5.4. or earlier.
I have made a blog post on the steps needed to build this module.
License
This code is released under the Vtiger Public License Version 1.1.