Add short README


git-svn-id: https://svn.apache.org/repos/asf/httpd/docs-build/trunk@609989 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/README b/README
new file mode 100644
index 0000000..87393c0
--- /dev/null
+++ b/README
@@ -0,0 +1,3 @@
+To completely rebuild the doccos, use:
+
+      ./build.sh all convmap