Add support for require() with CommonJS

[PaulBGD]

Add supports to the JS version so we can use it with CommonJS.

[pradyunsg]

@PaulBGD Could you add a description?

[getify]

I think we should just have a separate branch for the AMD form of the lib, like we do for the node (CommonJS) form.

[pradyunsg]

Well, I think this is fine as it's a fairly trivial change. But I'm not really banking either way but would definitely prefer less branches.

[getify]

if we we're going to make this change, we should just change to the standard UMD wrapper and do away with having a separate node branch, since UMD works in AMD, CommonJS, and browser.

[pradyunsg]

Works with me.

We do away with the node branch and use the standard UMD wrapper (nodeAdapter?) in javascript branch and make a new node release (I say 1.0.1).

[getify]

+1