Automating the process of creating a steam lobby (for dota) and inviting users to it

I'm working on a Ruby on Rails web-application and I want to create lobbies and send invitations to users to join these lobbies. Simply, I want to achieve ISteamMatchmaking Interface functionality of Steam SDK but the problem is that sdk in written in C/C++ and I would have to write wrapper to integrate sdk in my application.

My question is that is there some easy and less time consuming approach to achieve ISteamMatchmaking Interface functionality in web-application?

I'm using RoR but I'm open to use other technologies too.