How to work with graphql-relay?

[mnpenner]

I'm not actually using Relay, but I'm trying to use the Relay spec to set up pagination, as shown in the Join-Monster documentation.

They have this:

const { connectionType: CommentConnection } = connectionDefinitions({ nodeType: Comment }

But Comment would come from a .graphqls file if I'm not mistaken, so... I'm not sure how do to do this in conjunction with a schema file. Do you have any examples?