gitignore update

Signed-off-by: Sam Hellawell <sshellawell@gmail.com>
test
.gitignore is now working
Added in the PhysicsEntity class to save on some bullshit in the future

Signed-off-by: Sam Hellawell <sshellawell@gmail.com>
EntityManager now returns the entity added in addEntity(), changed SmartTexture to use PhysicsEntity, removed debug line from camera

Signed-off-by: Sam Hellawell <sshellawell@gmail.com>