Update users_comments.md

AtsushiSakai · web-flow · commit 3b416f9c9769 · 2019-01-06T09:04:22.000+09:00
diff --git a/users_comments.md b/users_comments.md
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 # Educational users
 
+This is a list of users who are using PythonRobotics for education.
+
+If you found other users, please make an issue and let me know.
+
 - [CSCI/ARTI 4530/6530: Introduction to Robotics (Fall 2018),  University of Georgia ](http://cobweb.cs.uga.edu/~ramviyas/csci_x530.html)
 
 # Individual users comments
