Add a CLI script to locally generate the graph svg

[matheusd]

The main use case would be to automate generation of the dependency graph without having to spin a browser and download the svg.

Ideally, this would be project-local script that would get installed as a dev dependency to be executed either manually or in a CI. The user API would be something like:

$ npmgraph --packages "foo,bar@1.3.4,baz" --output my-project-deps.svg

[broofa]

Good idea. 'Shouldn't be that hard to get working. Fetching the dependency tree happens in Store.js, which uses window.fetch() under the hood. That would have to be refactored to work on the server. Also, getting graphviz to run on the server will take a similar rework.

People will probably want this to work with local filesystem repos, github repos, and private registries, though... that's a whole other bag of worms to deal with.