Library is not compatible with module loaders.

[Undergrounder]

The library is using some globals (window.Flow and window.FustyFlow) instead of requiring them and
the FustyFlow class is never imported when using npm require.

This makes using it with webpack and other module bundlers very tricky.

[evilaliv3]

@Undergrounder do you have any suggestion or you have a possible pull request in mind? :)

[Undergrounder]

I could prepare a pull request with the tools I'm confortable (webpack) if you agree with this.

It would be then compatible with the browser, the amd and CommonJS specifications.

[AidasK]

You are good to go, If you can make it without breaking changes

[Undergrounder]

Closed in #15

[evilaliv3]

thanks @Undergrounder ! so well done!

i've left you some comments for some corrections i think we would need before merging the patch. would you please evaluate to refine it?