Snake doesn't die when trying to reverse movement.
Display of score on death.

Signed-off-by: Thomas Helmke <thomas.helmke@gmx.de>
Updated .gitignore.

Signed-off-by: Thomas Helmke <thomas.helmke@gmx.de>
Updated .gitignore again

Signed-off-by: Thomas Helmke <thomas.helmke@gmx.de>