I tried running:
$ git push heroku master ----- Total 7121 (delta 2300), reused 6879 (delta 2228) ! Heroku push rejected, no Cedar-supported app de
My stupid error was to mispell requirements.txt as the erroneous requirments.txt. I didn't need setup.py.
requirements.txt
requirments.txt
setup.py
Additionally I need to actually store the git repository in Github. Just creating it locally wasn't enough.