document vill trading

[Yarden-zamir]

for reference:

[auto_trader]
	#The minimum amount of time in ticks the auto trader takes to restock
	#Range: > 1
	min_restock_time = 24000
	#The maximum amount of time in ticks the auto trader takes to restock
	#Range: > 2
	max_restock_time = 44000
	#The cooldown in ticks for the auto trader to do a trade
	#Range: > 1
	trade_cooldown = 40```