[rules-dev] Conway example - update to use ruleflow

Just to let you know I am updating the example to use ruleflow (it looks like one or more rules are wrong too as the "glider" doesn't glide, so I'll have a look at these also). Doesn't look particularly taxing so should have it done very soon - provided the wife doesn't complain that she's not seeing much of me in the evenings ;-) With kind regards, Mike