Investigate: require shim no longer working in 2.x

[pichfl]

Seems there is some problem with the way we handle require. See #147 (comment)

This used to work and as I refactored there, I might have made an error. Will investigate.

[bendemboski]

I don't think there's a bug -- the comment was updated to indicate that it was a require vs. requireNode problem.

At some point it might be worth looking to getting rid of that by using loader.js's noConflict functionality...