Overall goals of this script:
- open an image file
- check if the image is a square and at least 228x228
- loop through icon dimensions
- resize image and write to disk
- add resized image to zip archive
- remove resized image
- show success message or error
- PIL module for image manipulation - install if you don't have it
$ sudo pip install image
$ python appIconPy.py /path/to/image.png