This patch:
- reformats codebase to use 2-spaces instead of 4. This will
align the project with other codebases (e.g. DevTools and Lighthouse)
- enables eslint indentation checking
References #19
This patch:
- moves phantom shim shell into a bin/ folder
- introduces a new root index.js which exposes Browser to the
dependent modules
- adds forgotten LICENSE header to the install.js
