Add simulation.h, move definitions to there.
Add simulation.c, which contains main simulation loop

The basic skeleton of the main simulation is now added.  It just doesn't do
anything yet.
Merge pull request #5 from daniel-ault/master

Main simulation loop
Merge pull request #6 from jeigrei/CargoSimUI

first UI commit -- scaffolding
Merge pull request #9 from jeigrei/CargoSimUI

added dummy textFields and animation slider
Merge pull request #12 from jeigrei/CargoSimUI

Cargo sim ui
Merge pull request #13 from jeigrei/CargoSimUI

Cargo sim ui
Merge pull request #14 from jeigrei/CargoSimUI

REAL progress
Merge pull request #15 from jeigrei/CargoSimUI

made it pretty
SUPER SPEED
it has statistics, baby.