Monorepo support

I am trying to leverage this tool to generate the license lists for all the packages in a monorepo and have run into a few issues:

1. if I run from the root of the repo, then I only see the dependencies in the root package.json - that’s kind of expected
2. if I run from the package’s folder, then the license is missing for any hoisted dependency

I think monorepo support could be added easily by either:

1. --monorepo option: the tool would scan the sub-directories for package.json files and resolve the locally installed package to either the value in it’s nearest node_modules folder UP TO the root directory
2. --add-node-modules X option: the tool would scan these additional locations for module metadata

[luke-lacroix-healthy]

It seems to be working correctly 😃

[BePo65]

No command line flag needed, as license-report now mimics the node package resolution algorithm: if a package is not found in node_modules, just step up 1 level up to the root directory and try it again.