in app billing in android using titanium studio

Hi everyone!

am building an in app billing application for android using titanium studio. I've found a module and I've successfully included it in my app. But don't know what to do next. Am new to this in app billing.Can anyone tell me that what should I do next or is there any documentation of this android module. here is the link of module

https://marketplace.appcelerator.com/apps/776#!overview

Any help would be much appreciated.

Thanks:)