ONOS-1479 -- GUI - augmenting topology view for extensibility:
- Preliminary work in implementing installation of custom buttons to details panel for selected device.

Change-Id: Id26ac301f72b4521d2a388d34ee0a287f400c68c
diff --git a/web/gui/src/main/webapp/_sdh/overlaywork/README.txt b/web/gui/src/main/webapp/_sdh/overlaywork/README.txt
new file mode 100644
index 0000000..d7dcbec
--- /dev/null
+++ b/web/gui/src/main/webapp/_sdh/overlaywork/README.txt
@@ -0,0 +1,4 @@
+NOTE:
+
+This directory is putting under revision control some key files from
+an example stand-alone app, as I develop the topology overlay functionality.