Incorporate content from awesome-ocaml

[amirmc]

See issue at ocaml-community/awesome-ocaml#35

[agarwal]

This is a great list! I think we could re-structure the Tutorials page and make it more of a References page, which awesome-ocaml provides a perfect start for. We organize topics into nice sections and provide links to pertinent information. Sometimes those links go to an external site, and sometimes they point to internal tutorials. Thoughts?

[cwfoo]

Perhaps links to awesome-ocaml on the Learn and/or Community pages would suffice as a stopgap measure. Better to have a link to the material than no material at all.

[pmetzger]

@cwfoo Perhaps you should submit a pull request?

[ghost]

How about a link on the home page, under "ask experts" like "Awesome Ocaml Libraries and Learning Resources" ... Ideally, some of the content will move off of awesome-ocaml and live exclusively in "explore", but that can happen later