Update Readme.md

Fedora or redhat based distributions installation instructions

README.rst

@@ -19,6 +19,10 @@ be a package available to install the Powerline Fonts with the following command
 ::
 	sudo apt-get install fonts-powerline
 
+For fedora (tested on 28) or redhat based Linux distribution, there should also be a package available to install with the following command:
+::
+	sudo dnf install powerline powerline-fonts
+	
 On other environments, you can copy and paste these commands to your terminal. Comments are fine too.
 ::
     # clone