fix revolunet#29: add tango with django

Author: revolunet

img/cover_tangowithdjango.jpg

@@ -457,5 +457,14 @@
       "info":"This is an example-driven, hands on tutorial that carefully teaches programmers how to accomplish numerous text processing tasks using Python.",
       "url":"http://gnosis.cx/TPiP/",
       "cover": "img/cover_text_processing_in_python.jpg"
+    },
+    {
+      "title":"How to Tango with Django",
+      "author":"Leif Azzopardi",
+      "authorUrl":"http://leifos.me",
+      "level":"Beginner",
+      "info":"A beginner's guide to web development with Django 1.5.4. This book has been designed to get you going fast and to learn by example. You'll learn the key aspects of the Python Django Framework by developing an application called Rango.",
+      "url":"http://http://www.tangowithdjango.com",
+      "cover": "img/cover_tangowithdjango.jpg"
     }
 ]}