Revert "Game.cs removed"

This reverts commit b5329bd503f3781ef54dc51f8092d5978acc472e.
Racegame classe gemaakt en methodes toegevoegd aan collision
Merge branch 'develop' of https://github.com/Rubykuby/XNARaceGame into develop
changed damage to repair in powerup
Checkpoints created
Constructor checkout updated
Solution file updated
Merge branch 'develop' of https://github.com/Rubykuby/XNARaceGame into develop

Solution file updated
taakverdeling en planning toegevoegd
gedeelte van collision geschreven
Formatted Lukas' code
Removed test.txt~
Tried to add properties to Entity.cs and Car.cs. Unsuccessfully?
de getters en setters van racegame veranderd

omdat C# zwarte magie is had ik et boek verkeerd geinterpreteerd
kleine aanpassing in methodes
getters en settters gefixt + attribute initialisatie gefixt
Fixed properties! They're kind of like functional now :):):)
argumenten toegevoegd aan methods, nieuwe methodes aangemaakt, en ze virtual gemaakt
Fix'd Checkpoint.cs a little.
Merge branch 'develop' of https://github.com/Rubykuby/XNARaceGame into develop

Fix'd Checkpoint.cs a little