Non-Minified /dist/ file

[shshaw]

I've submitted a simple pull request that helps FLIP be used in module loaders, but Webpack presents this error due to the file being minified.

It looks like if you custom build it with isProd set to false, it won't be minified, but that's not a great option for those who'd like to drop it into a project and use it right away.

A flip.js and flip.min.js in the /dist/ dir would be fantastic!

[shshaw]

I'm also noticing a lot of window centric ties for defining Core and FLIP. Better module support would be nice, overall.