Ex 6

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Move apocalypse and create animals into game logic code

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Update patches (exercises)

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>