Made tabs switchable
Fixed issue with npm-shrinkwrap resolving the local-npm registry and breaking elsewhere.
Redid webpack to handle styles, and be a bit cleaner overall.
Added basic default styles.
Added webpack-dev-server for development.
Cleaned up demo files a bit.
Added example of multiple concertinas on a page.
Refactored to use better ES6 conventions and syntax.
Initial release. MVP functionality.