add the tour to the page

IPython/html/templates/notebook.html

@@ -215,6 +215,7 b' class="notebook_app"'
         </li>
         <li class="dropdown"><a href="#" class="dropdown-toggle" data-toggle="dropdown">Help</a>
             <ul  id="help_menu" class="dropdown-menu">
+                <li id="notebook_tour" title="A quick tour of the notebook user interfaces"><a href="#">User Interace Tour</a></li>
                 <li id="keyboard_shortcuts" title="Opens a tooltip with all keyboard shortcuts"><a href="#">Keyboard Shortcuts</a></li>
                 <li class="divider"></li>
                 {% set
@@ -340,6 +341,8 b' class="notebook_app"'
 <script src="{{ static_url("notebook/js/notificationwidget.js") }}" type="text/javascript" charset="utf-8"></script>
 <script src="{{ static_url("notebook/js/notificationarea.js") }}" type="text/javascript" charset="utf-8"></script>
 <script src="{{ static_url("notebook/js/tooltip.js") }}" type="text/javascript" charset="utf-8"></script>
+<script src="{{ static_url("notebook/js/tour.js") }}" type="text/javascript" charset="utf-8"></script>
+
 <script src="{{ static_url("notebook/js/config.js") }}" type="text/javascript" charset="utf-8"></script>
 <script src="{{ static_url("notebook/js/main.js") }}" type="text/javascript" charset="utf-8"></script>