Fix the docs/ url about elixir-lang.github.com

[josevalim]

The docs are generated here: https://github.com/elixir-lang/docs . I think docs/ would indeed be better as it would be the thing most people would try from the URL.

I also wanted for a while to split the generated docs per application. So we generate one page for EEx, Mix, and so on. So if you are willing to send a PR (probably to this repo, the docs repo and the Elixir one), it would be really appreciated!

[alco]

Oh, the docs repo is automatically picked up because of the redirection from elixir-lang.org to elixir-lang.github.io, right? I forgot about that.

The docs.html in this repo is processed by jekyll. It has this header:

---
title: Elixir Documentation
section: docs
layout: default
---

I need to either add generated docs.html to the docs repo or add layouts to the docs repo.

Regarding the separate pages per app, do you want them to have different URLs? Like elixir-lang.org/docs/stable/eex? Will each one have a different nav on the left of the page?

[josevalim]

The docs.html in this repo is processed by jekyll. It has this header:

Gah. That would make things harder (and possibly inconsistent). Maybe we can add a redirect from docs/ to docs.html for those who want to access docs/ directly.

Regarding the separate pages per app, do you want them to have different URLs?

Yeah, it definitely needs different URLs. In theory /docs/stable/APP is better because it is easier to move docs from master to stable (I need to do this operation on very release).