Emulate node's require

[daurnimator]

It would be nice to be able to have lua load node.js modules on the fly. i.e. runtime:require("../foo.js").

• It should take care of relative paths etc.
• It should create the node.js module object
• It should interpret package.json to find the 'main' module.

[daurnimator]

Might be able to work from the actual node implementation? https://github.com/nodejs/node/blob/master/lib/module.js