Merge pull request #148 from gl3n/patch-2

Add "menu" block

sphinx_rtd_theme/layout.html

@@ -89,6 +89,7 @@
       </div>
 
       <div class="wy-menu wy-menu-vertical" data-spy="affix" role="navigation" aria-label="main navigation">
+        {% block menu %}
           {% set toctree = toctree(maxdepth=2, collapse=False, includehidden=True) %}
           {% if toctree %}
               {{ toctree }}
@@ -96,6 +97,7 @@
               <!-- Local TOC -->
               <div class="local-toc">{{ toc }}</div>
           {% endif %}
+        {% endblock %}
       </div>
       &nbsp;
     </nav>