Rendering Druid documentation into pdf format

[yurmix]

Hi,

I think it would be very helpful for new users, wanting to learn the product via a textbook, to have a pdf / single-page / epub version of the documentation.
Potentially, this format can be rendered and published at each release.

I might start looking into it, though I'm not as strong in frontend so I'd appreciate any suggestions on how to implement it.

[vogievetsky]

That is a terrific idea!