Fix compatibility with readthedocs

Author: djungelorm

sphinx_tabs/tabs.py

@@ -198,7 +198,11 @@ def add_assets(app):
 
 def copy_assets(app, exception):
     """ Copy asset files to the output """
-    if app.builder.name != 'html' or exception:
+    if app.builder.name not in ('html', 'readthedocs', 'readthedocssinglehtmllocalmedia'):
+        app.info('Not copying tabs assets! Not compatible with %s builder' % app.builder.name)
+        return
+    if exception:
+        app.info('Not copying tabs assets! Error occurred previously')
         return
     app.info('Copying tabs assets... ', nonl=True)