[gnome-devel-docs] HIG: add missing image to Makefile

[Allan Day <allanday src gnome org>]

commit 89d1b15715e04f0ef43c346e3908de611dcbd422
Author: Allan Day <allanpday gmail com>
Date:   Fri Sep 25 11:53:41 2015 +0100

    HIG: add missing image to Makefile

 hig/Makefile.am |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/hig/Makefile.am b/hig/Makefile.am
index c6731bf..eba381e 100644
--- a/hig/Makefile.am
+++ b/hig/Makefile.am
@@ -73,6 +73,7 @@ HELP_MEDIA = \
         figures/patterns/action-dialog.svg \
         figures/patterns/application-menu.svg \
         figures/patterns/editable-lists.svg \
+       figures/patterns/empty-placeholder.svg \
         figures/patterns/grid.svg \
         figures/patterns/header-bar.svg \
         figures/patterns/header-bar-menu.svg \