[library-web] add a link to the python gtk 3 tutorial

[Frederic Peters <fpeters src gnome org>]

commit c364355f61e46d224634931daab9558a5a7117b3
Author: Frédéric Péters <fpeters 0d be>
Date:   Mon Apr 6 11:44:30 2015 +0200

    add a link to the python gtk 3 tutorial

 data/overlay.xml.in |   10 ++++++++++
 1 files changed, 10 insertions(+), 0 deletions(-)
---
diff --git a/data/overlay.xml.in b/data/overlay.xml.in
index a5fc375..613f422 100644
--- a/data/overlay.xml.in
+++ b/data/overlay.xml.in
@@ -1269,6 +1269,16 @@
       </_abstract>
     </document>
 
+    <document doc_module="pygtk3-tutorial" channel="devel" category="devel-guides" weight="0.56">
+      <category>devel-guides</category>
+      <new/>
+      <_title>The Python GTK+ 3 Tutorial</_title>
+      <_abstract>
+        An introduction to writing GTK+ 3 applications in Python.
+      </_abstract>
+      <href>http://python-gtk-3-tutorial.readthedocs.org/en/latest/</href>
+    </document>
+
     <!-- create documents from wiki pages -->
     <extrawikidocs>
       <channel>devel</channel>