The OpenShift nodejs cartridge documentation can be found at:

http://openshift.github.io/documentation/oo_cartridge_guide.html#nodejs

The Demo CRUD App can be found at:

http://meanstack-meantown.rhcloud.com/

Note:

There are few flaws in the app, as in if you just update, without adding, or select an element, and modify it add it, and then click update; you might enter a Stringified key for that 'name' json object, in the mongoDB. The default key type is a Json Object in MongoDB.

I will soon, test it and get rid of this bug.