[release-notes/gnome-3-10] add detail on composite widgets

[Allan Day <allanday src gnome org>]

commit a68a61f2394e3b6d5ce3e3b5ce57ecc7d89fb0ac
Author: Allan Day <allanpday gmail com>
Date:   Tue Sep 17 15:01:00 2013 +0100

    add detail on composite widgets

 help/C/developers.page |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)
---
diff --git a/help/C/developers.page b/help/C/developers.page
index 5c169db..a5bb413 100644
--- a/help/C/developers.page
+++ b/help/C/developers.page
@@ -45,8 +45,9 @@
   </section>
 
   <section id="glade-templates">
-    <title>Define Complex Widgets With Glade Templates</title>
-    <p>TO DO</p>
+    <title>Composite Widgets Templates</title>
+    <p>From 3.10, GTK+ allows the creation of composite widget templates. These use XML to define composite 
widgets without the need to use GtkBuilder APIs. GTK+ is already taking advantage of this feature to define 
its own composite widgets, such as <code>GtkVolumeButton</code> and <code>GtkFileChooserDefault</code>. 
Application authors can use the same capability to make their own, which can be done by directly with XML or 
with the <app>Glade</app> interface builder.</p>
+    <p>Tristan Van Berkom has written a <link 
href="http://blogs.gnome.org/tvb/2013/04/09/announcing-composite-widget-templates/";>detailed blog post about 
this new feature</link>, which includes a tutoral and working example that you can try.</p>
   </section>
 
   <section id="baseline-support">