Add readme

README.md

+OpenLDAP syncrepl monitoring tools
+====
+
+This module provides tools to monitor multiprovider OpenLDAP environments in
+real time. Hooks are available for each change as announced by the provider,
+when a provider has caught up with the rest of its environment and when it is
+not catching up fast enough and has fallen behind.
+
+A rudimentary terminal application (`syncmonitor`) is also provided for manual
+monitoring.