add python mailing list to readme

Author: rmccorm4

README.md

@@ -1,2 +1,7 @@
 # Intermediate-Python-Tutorial
 Repo for a HackBU workshop on some Intermediate Python practices, just a step above basic for loops and if statements and what not.
+
+## For Enthusiastic Python-ers
+There is a mailing list for new ideas to be added to Python with a very 
+friendly community. You can subscribe here:
+[Python Mailing List (https://mail.python.org/mailman/listinfo/python-ideas)](https://mail.python.org/mailman/listinfo/python-ideas)