[release-notes/gnome-3-6] Add back explaining how to install from source

[Andre Klapper <aklapper src gnome org>]

commit 964e326ea3d6a1e9f20c9fe42e2f084ff2b7e1e0
Author: Andre Klapper <a9016009 gmx de>
Date:   Mon Sep 17 17:50:52 2012 +0200

    Add back explaining how to install from source

 help/C/index.page |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/help/C/index.page b/help/C/index.page
index 433df02..0b133af 100644
--- a/help/C/index.page
+++ b/help/C/index.page
@@ -92,6 +92,10 @@
       very soon, and some already have development versions that include the new GNOME release.
     </p>
 
+    <links type="topic" style="2column"
+      groups="installation-live-images
+              installation-sources"/>
+
   </section>
 
   <section id="about" style="2column">