Update pycatenary.py
  - Update pycatenary.py so that it will not attempt to make a plot.
  - Update pycatenary.py so that it will not attempt to make a file of outputs, but instead only prints out.
Update pycatenary.py
  - Update pycatenary.py to completely clean code so that no extraneous comments are shown.
  - Fix error after commenting out reference to file printing.