CDN with integrity

[smariel]

In README.md, the following CDN links is provided: <script src="https://cdn.jsdelivr.net/npm/[email protected]/lazyload.js"></script>

You may specify the minified version.

Then, could you please add the integrity hash of the last version (and the minified) ? https://www.jsdelivr.com/using-sri-with-dynamic-files