d4be600328
* Add dnf and yum commands in "Installation" section
Even though the command is very simple, it's good to be able to c&p it.
There were already commands for apt, emerge, pip, even direct installation
from git, so adding Fedora/RHEL/CentOS examples is reasonable.
Since yum is not installed by default on any supported Fedora releases
(F26 and F28 currently), recommend dnf.
* Tiny edit
(cherry picked from commit 4c29396217)