simplified prototype; prototype_1.py is now the most simple form of the simulation
see last commit message
added Notes directory
add read and write json methods to simulation class; updated mathematical model to include distance as well as price
removed unecessary files
still getting used to git...
removed prototype_1.py to prepare for merging into master
merged simplest into master branch
made two separate protoype files - the numbers indicate versions and the _main file is the most advanced version