Add node module to ember CLI app

I would like to use this Node.js module http://ift.tt/15Je4Vp in my Ember-CLI application.

How do I make it available to the Ember application?

I tried it by adding this to the Brocfile.js

app.import('node_modules/remarkable-regexp/index.js');

but it fails like this:

Path or pattern "node_modules/remarkable-regexp/index.js" did not match any files