NPM package statistics and CDN usage instruction

[zarianec]

Hey there, first of all thank you for creating a great service!

I have some ideas how to make libraries.io and NPM section in particular even better:

1. Add usage statistics.
   NPM provides public API for downloads count. It can be used to collect downloads.
   Statistics from public CDNs like jsDelivr can be used as well - see how yarn uses it

2. Improve installation instructions for NPM packages
   Many packages could be used in a browser directly so it makes sense to provide the example of how to install it using CDN. Tricky part is getting the correct entry point for the package but jsDelivr recently released a new API for that so it can be used as well.

It could look like:

---

Install

npm install react@17.0.2

Use in browser

<script src="https://cdn.jsdelivr.net/npm/react@17.0.2/umd/react.production.min.js"></script>

---

I can spend some time on implementing that but must be sure that maintainers are interested in such improvements.

[jimaek]

@tiegz what do you think? Should we send a PR?