[gtk+] iconview: Add a diagram to CSS documentation

[Matthias Clasen <matthiasc src gnome org>]

commit 740fa2cd70fb9b3aae3ff5ed24b74c7558c761af
Author: Matthias Clasen <mclasen redhat com>
Date:   Tue Nov 10 07:37:25 2015 -0500

    iconview: Add a diagram to CSS documentation

 gtk/gtkiconview.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/gtk/gtkiconview.c b/gtk/gtkiconview.c
index f919cd9..797b2e1 100644
--- a/gtk/gtkiconview.c
+++ b/gtk/gtkiconview.c
@@ -68,6 +68,10 @@
  *
  * # CSS nodes
  *
+ * |[<!-- language="plain" -->
+ * iconview.view
+ * ╰── [rubberband]
+ * ]|
  *
  * GtkIconView has a single CSS node with name iconview and style class .view.
  * For rubberband selection, a subnode with name rubberband is used.