set title on index page

doc/_templates/layout.html

@@ -11,6 +11,11 @@
 {% set css_files = css_files + ['_static/main.css']%}
 {% set css_files = css_files + ['_static/bootstrap.min.css']%}
 
+{%- if pagename == 'index' %}
+    {% set title = 'word clouds in Python' %}
+{%- endif %}
+
+
 {%- block content %}
 {{ navBar() }}
 <div class="container content-container">