changed docs theme

docs/conf.py

@@ -256,3 +256,9 @@ texinfo_documents = [
 
 # If true, do not generate a @detailmenu in the "Top" node's menu.
 #texinfo_no_detailmenu = False
+
+import sphinx_rtd_theme
+
+html_theme = "sphinx_rtd_theme"
+
+html_theme_path = [sphinx_rtd_theme.get_html_theme_path()]

docs/requirements.txt

@@ -0,0 +1 @@
+sphinx_rtd_theme