[PATCH] doc: use markdown syntax in README

[Yuya Nishihara]

On Fri, 22 Sep 2017 15:26:13 +0200, David Demelier wrote:
> # HG changeset patch
> # User David Demelier <markand at malikania.fr>
> # Date 1506086724 -7200
> #      Fri Sep 22 15:25:24 2017 +0200
> # Node ID 274acdd5f4d8d9c68359a99f6caab6efaec415de
> # Parent  b90bd9a98c8ba06afdb7f32d434e501d7b3c3929
> doc: use markdown syntax in README
> 
> Using markdown syntax will have better display in most hosting services
> including phabricator.

This change disagrees with 76b171209151. Foozy?