README: Mention the option to disable systemd integration

diff --git a/README b/README
index 8e1118f..fa108cc 100644 (file)
--- a/README
+++ b/README
@@ -79,6 +79,18 @@ For a working system, certain configuration options need to be enabled:
                configured by other means, the command line client can be
                disabled and the dependency on readline is removed.
 
+       --disable-systemd
+
+               Disable integration with systemd
+
+               By default the integration with systemd is enabled and
+               installed. This gives the best integration into all
+               distributions based on systemd.
+
+               This option is provided for distributions that do not
+               support systemd. In that case all integration with the
+               init system is up to the package.
+
        --enable-experimental
 
                Enable experimental plugins