Written By: Cristopher Hernandez
With assistance through: Python Crash Course by Eric Matthes

REQUIRED: pygame

if pygame is not installed, simply run

pip install pygame

OR

pip install -r requirements.txt

TO RUN: execute alien_invasion.py (e.g.: run 'python alien_invasion.py')

NOTES:

This game requires read and write access to the file system. It will need to read asset files to display images and play sounds.
It will need write access to dump the high score into a file for future play sessions.