Changed conf.py to use RTD theme if available

docs/conf.py

@@ -96,7 +96,13 @@ pygments_style = 'sphinx'
 
 # The theme to use for HTML and HTML Help pages.  See the documentation for
 # a list of builtin themes.
-html_theme = 'default'
+try:
+    import sphinx_rtd_theme
+except ImportError:
+    html_theme = 'default'
+else:
+    html_theme = 'sphinx_rtd_theme'
+    html_theme_path = [sphinx_rtd_theme.get_html_theme_path()]
 
 # Theme options are theme-specific and customize the look and feel of a theme
 # further.  For a list of options available for each theme, see the

requirements-dev.txt

@@ -9,3 +9,4 @@ coverage
 # documentation
 Pygments>=1.6
 Sphinx
+sphinx_rtd_theme