not everyone has only python3 installed

[TIBTHINK]

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[JojoVes]

This was super useful to get this working for me. Would recommend merging.

[muhasturk]

If you have both python 2 and python 3 installed on your OS, could not work this script?

[TIBTHINK]

if you run it using python gitim.py it will default to Python 2,
until January of the next year, so having the "#!/usr/bin/env python3"
in will make it more straight forward