I’ve built a little web-based tool called ForceNPM that makes it super easy to add NPM packages to Salesforce. Check it out:
![forcenpm](/uploads/2016/08/02092614/forcenpm.gif)
Give ForceNPM a try!
The code is on GitHub so if you’d like to deploy this on your own Heroku app or other infrastructure, you can do that. Let me know how it goes!