doc(tuto): add structure of "enhance views" museum tutorial part.

doc/tutorials/museum/enhance-views.rst

 .. -*- coding: utf-8 -*-
 
 .. _TutosMuseumsEnhanceViews:
+
+
+Enhance views
+=============
+
+In :ref:`TutosMuseumsGettingStarted`, we saw how to customize our views by writing html code
+directly in CubicWeb views. In this part, we will see how to customize our web application
+using different methods : with pyramid views using jinja2 templates and with React.
+
+Pyramid and Jinja2
+~~~~~~~~~~~~~~~~~~
+
+
+React in a CubicWeb view
+~~~~~~~~~~~~~~~~~~~~~~~~
+
+
+React in a Pyramid view
+~~~~~~~~~~~~~~~~~~~~~~~