Seems to have problems with scoped packages

[cheapsteak]

This currently crashes when dep tree includes scoped packages

Error: Cannot find module '/.../node_modules/@react-aria/package.json'
Require stack:
- /.../node_modules/license-checker-webpack-plugin/src/licenseUtils.js
- /.../node_modules/license-checker-webpack-plugin/src/index.js
- /.../engine-frontend/webpack.config.js

It's trying to find a package.json under the "Scope" part of scoped packages (which would never exist)

[felixfontein]

For a workaround see #37 (comment).