update README.markdown to clearly indicate how to start using the concat module

diff --git a/README.markdown b/README.markdown
index bb9571aa92e78b51579c77c12e9c234ecce20b90..8736d57a60c30fc0cdf45593930e23950ab0d04a 100644 (file)
--- a/README.markdown
+++ b/README.markdown
@@ -11,6 +11,9 @@ Released under the Apache 2.0 licence
 Usage:
 ------
 
+Before you can use any of the concat features you should include the class
+concat::setup somewhere on your node first.
+
 If you wanted a /etc/motd file that listed all the major modules
 on the machine.  And that would be maintained automatically even
 if you just remove the include lines for other modules you could