Enable ES2015 syntax

[Adriaan Callaerts]

Add a flag/option to use the new export syntax added in ES2015 instead of module.exports.
Tools like babel used for post-processing might not be configured to recognize both module.exports/require and export/import.

This is a low priority issue, though should be (I think) easy to add.

[Tobias Koppers]

I'll try to update all loaders when webpack 2 is stable...

[Kevin Suttle]

Seems pretty stable now https://github.com/webpack/webpack/releases/tag/v2.1.0-beta.25

[Kees Kluskens]

#15 has the fix for this. It will be released around the webpack v2 stable release.

[Michael Ciniawsky]

Since webpack >= v2.0.0 has build-in support for JSON now, this is issue obsolete