Committing an updated color car based on speed.
Merge branch 'master' of https://github.com/jamestlynch/CSCI201_Team_FinalProject.git
Merge branch 'master' of https://github.com/jamestlynch/CSCI201_Team_FinalProject.git
Added method to change car colors according to their speed.  Edited the
XML Loader so that the segment points are now added in the correct
direction