[release-notes/gnome-3-26] Add screenshot for Builder debugger

[Andreas Nilsson <andreasn src gnome org>]

commit 1476e9b6cb8d413b6f8488963104f5fe6fa00f40
Author: Andreas Nilsson <anilsson redhat com>
Date:   Fri Sep 8 12:58:06 2017 +0200

    Add screenshot for Builder debugger

 help/C/developers.page              |    2 +-
 help/C/figures/builder-debugger.png |  Bin 0 -> 290061 bytes
 2 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/help/C/developers.page b/help/C/developers.page
index ca7a827..1327bb4 100644
--- a/help/C/developers.page
+++ b/help/C/developers.page
@@ -39,7 +39,7 @@
     project. Selecting a search result jumps to that location, so you can
     quickly navigate using only the keyboard. The presentation of search
     results has also been improved.</p>
-    <media type="image" src="figures/placeholder.png"/>
+    <media type="image" src="figures/builder-debugger.png"/>
     <p>Builder includes a debugging feature for the first time in 3.26. This is
     an initial preview and is expected to mature in subsequent releases.
     The debugger allows running your project in debug mode and to step through
diff --git a/help/C/figures/builder-debugger.png b/help/C/figures/builder-debugger.png
new file mode 100644
index 0000000..e941155
Binary files /dev/null and b/help/C/figures/builder-debugger.png differ