Update pull_request_template.md

pull request template

Author: ychaikin

pull_request_template.md

@@ -1 +1,5 @@
-This is a pull request template
+Are you trying to provide an assignment solution?
+
+If yes, this is NOT the place to do it. Do NOT create Pull Requests to this repository unless you find an error in the code or description of something and want to suggest a change. If you want to suggest a change, create an issue first to see if we are in agreement that such a change should be made.
+
+Again, DO NOT create pull requests to this repository to submit your assignment solutions. Follow the instructions in the course on how to submit your assignment. If confused about that, ask on the course's forum.