Switch to MIT License

The MIT Expat License suits this project better than a GPL variant.

Clean up and reduce NPM footprint

This is just a clean-up release; I now only include files which are actually necessary at run-time in NPM.

Rely on Browserify for module system support

The module is now accessible through a wide variety of module systems as well as built stand-alone for those in need of a quick include. This also solves a bug which accidentally rendered v1.0.0 unusable client-side.

Refactor to support arbitrary plural forms

We now support full plural forms built-in.

Final non-plural release with fixed docs and badges

Cleaned up documentation, added badges...