Add readme for the daemonconfig directory

See Issue #5873

Docker-DCO-1.1-Signed-off-by: Timothy <timothyhobbs@seznam.cz> (github: https://github.com/timthelion)

daemonconfig/README.md

@@ -0,0 +1,3 @@
+This directory contains code pertaining to the configuration of the docker deamon
+
+These are the configuration settings that you pass to the docker daemon when you launch it with say: `docker -d -e lxc`