point to the new location for documentation

diff --git a/raddb/README.md b/raddb/README.md
new file mode 100644 (file)
index 0000000..a81eea5
--- /dev/null
+++ b/raddb/README.md
@@ -0,0 +1,12 @@
+# Where to find documentation
+
+All documentation for the server configuration files is now in the
+`doc/raddb/` directory.
+
+You can now also do:
+
+       $ make asciidoc
+
+from the top-level directory.  The configuration files here will be
+converted to Asciidoc with markup, and places in the `doc/raddb/`
+directory.