Routemaster version 0.2.0

@BrandwatchLtd/vizia please review

The details of these changes are in the commits, but since I never PR'd routemaster in the first place, consider this your chance to review it as a whole. See the [latest readme](https://github.com/BrandwatchLtd/routemaster/blob/3c5da630924ff547e4cc8051ab573bc1b3ead3c7/README.md) for more info and let me know what you think!