[howto] Serve ddox documentation on github.io deployed by Travis CI

[Seb]

On Monday, 8 January 2018 at 22:06:44 UTC, Bastiaan Veelo wrote:
> I was looking for this, it wasn't there, so I wrote it myself.
>
> - You have a D poject on GitHub?
> - You want your documentation online? For free?
> - You think it should always be up to date without you lifting 
> a finger?
> - You wonder how?
>
> Here's how: 
> https://gist.github.com/veelo/f7668510bad2e8c9212ab66104541fcc
>
> I'm looking forward to see lots of well written documentation!
>
> Cheers,
> Bastiaan.
>
> (It turned out as a gist. I don't mind it being recycled on 
> wiki's, blog's or elsewhere.)

FYI: You could reduce the size of the `travis.yml`.
See e.g.:

https://github.com/thaven/oauth/pull/12