Add the missing __main__.py in the turtledemo package. It seems to have been lost during some mass rename action (r86095).
diff --git a/Lib/turtledemo/demohelp.txt b/Lib/turtledemo/demohelp.txt
index 5683875..fe83bc7 100644
--- a/Lib/turtledemo/demohelp.txt
+++ b/Lib/turtledemo/demohelp.txt
@@ -53,12 +53,7 @@
(2) How to add your own demos to the demo repository
- - scriptname: must begin with tdemo_ ,
- so it must have the form tdemo_<your-script-name>.py
-
- - place: same directory as turtleDemo.py or some
- subdirectory, the name of which must also begin with
- tdemo_.....
+ - place: same directory as turtledemo/__main__.py
- requirements on source code:
code must contain a main() function which will