Chat and app integration

There are application that are built with Meteor, which would be useful used with other applications. Is there an easy way of integrating them?

In particular, I wanted to integrate a chat (similar to slack) with the rest of my application (nullchat, etc). Then, I found Meteor Relay Chat, which sort of allows this sort of integration, but it then has bootstrap as a dependency. That dependency conflicts with materialize.

My other question is how can I remove this dependency from the Meteor Relay Chat package?