[gtk+] gtk-demo: Use <accelerator>

[Matthias Clasen <matthiasc src gnome org>]

commit 6d1cdaff7e2dce4175aea33eed24d677d96c4de9
Author: Matthias Clasen <mclasen redhat com>
Date:   Sat Mar 5 23:36:54 2016 -0500

    gtk-demo: Use <accelerator>
    
    Add an example of <accelerator> use in the builder example.

 demos/gtk-demo/demo.ui |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/demos/gtk-demo/demo.ui b/demos/gtk-demo/demo.ui
index f14eb2e..bbed319 100644
--- a/demos/gtk-demo/demo.ui
+++ b/demos/gtk-demo/demo.ui
@@ -78,6 +78,7 @@
                         <property name="visible">1</property>
                         <property name="label" translatable="yes">Save _As</property>
                         <property name="use-underline">1</property>
+                        <accelerator key="s" modifiers="primary | shift-mask" signal="activate"/>
                       </object>
                     </child>
                     <child>