Remove packages dir.
Added squirrel support: https://github.com/DamonOehlman/squirrel
Bundles may now optionally include an index.js file in their root. This file should export an express app instance, which will then be mounted as middleware to the main express app, thereby acting as a plugin of sorts. Bundles may also safely declare their own npm deps by utilizing squirrel: https://github.com/DamonOehlman/squirrel