How do I use the underlying Helios framework for iOS in a Ruby on Rails application?

I was looking for a data sync solution for an iOS app that I have been working on for a while and I think I found a solution in the Helios backend framework. The first issue I noticed about is the almost complete documentation covering this project. The only information I found was the Readme on the project's Github page.

Now I know that I need to use Postgres in order to use this framework with my rail app, which I also converted. Then I understand that this framework allows you to create a standalone application using a command helios

. I would prefer to keep the existing rails app that I spent time building and included helios as a gem in the current project I'm working on, which the Readme reports. However, I would like to know how I would link xcdatamodel

with the offline rail, because I have not seen any documentation on this when reading the Readme. Finally, are there any valuable resources on the internet regarding this framework?