DOC: Replace use of gen_rst with plot2rst extension.

doc/source/conf.py

@@ -32,7 +32,7 @@ except:
 # Add any Sphinx extension module names here, as strings. They can be extensions
 # coming with Sphinx (named 'sphinx.ext.*') or your custom ones.
 extensions = ['sphinx.ext.autodoc', 'sphinx.ext.pngmath', 'numpydoc',
-              'sphinx.ext.autosummary', 'plot_directive', 'gen_rst']
+              'sphinx.ext.autosummary', 'plot_directive', 'plot2rst']
 
 # Add any paths that contain templates here, relative to this directory.
 templates_path = ['_templates']
@@ -257,3 +257,5 @@ matplotlib.rcParams.update({
 """
 plot_include_source = True
 plot_formats = [('png', 100)]
+
+plot2rst_index_name = 'README'

doc/source/themes/agogo/static/agogo.css_t

@@ -79,6 +79,7 @@ h1, h2, h3, h4 {
   font-weight: normal;
   color: {{ theme_headercolor2 }};
   margin-bottom: .8em;
+  clear: left;
 }
 
 h1 {