Feature request: serve static version of download-graph so it can be included in markdown files

[NVolcz]

Thanks for providing an awesome service for the ecosystem! I almost always use npmtrends when I am comparing different npm packages and I try to document the reasons for my choices of dependencies in markdown files so I can come back and revisit the reasoning later. It would be useful to be able to be able to include an image in the documents:

![https://npmtrends.com/ghooks-vs-git-hooks-vs-hookem-vs-husky-vs-lefthook-vs-pre-commit-vs-simple-git-hooks.png]

[benadam11]

We are planning on supporting this - will probably be a few months before we get to it.