[Currently assuming](https://github.com/Designory/build-diff/blob/6f680c0/index.js#L180) user has `zip` installed. Either I should check for existence, or use a native option. - https://www.npmjs.com/package/adm-zip - https://www.npmjs.com/package/node-zip - https://www.npmjs.com/package/jszip - https://www.npmjs.com/package/archiver