Accessing Meteor local web server from another local device on Mac 10.8

I'm working on a Meteor site and conveniently it will run on localhost with a simple command meteor

. However, I want to be able to access this website from other computers on the local network. The main reason I want to do this is to view and test the application on mobile devices.

I'm running Mac Mountain Lion 10.8 and they've gotten rid of some nice personal web sharing panels. Everything I've seen on the internet is about setting up your own server, but all I want to do is grant access from another local device ...

thank