Car: Add code to set the car's lane based on calculated Turn
Refactor

Too many changes to list…
Merge branch 'master' into ashish
Change car's direction on street change
Merge branch 'ashish-temp' into ashish
Going crazy. slowly. one commit at a time
Car: Method calculateTurn() fixed
few changes

Car.cs:;
-added check in setFirstLane()
-cars wont enter lane if slot is occupied
-fixed double move for entering cars
Grid.cs: made _slots static
several small changes/fixes

-cleaned code in grid.cs and in simulation controller
-fixed closing/saving problem
-removed file from properties