Update

source/conf.py

@@ -15,6 +15,7 @@
 # import os
 # import sys
 # sys.path.insert(0, os.path.abspath('.'))
+import sphinx_rtd_theme
 
 from recommonmark.parser import CommonMarkParser
 
@@ -90,6 +91,8 @@ html_theme = 'sphinx_rtd_theme'
 #
 # html_theme_options = {}
 
+html_theme_path = [sphinx_rtd_theme.get_html_theme_path()]
+
 # Add any paths that contain custom static files (such as style sheets) here,
 # relative to this directory. They are copied after the builtin static files,
 # so a file named "default.css" will overwrite the builtin "default.css".