The strategy uses 3 emas: exponential moving average 14(shift 3),
ema15(shift 2) and ema 16 (shift 1) on time frame= 30mins buy if ema
14 greater than ema 15,ema 15 greater than ema 16, and candle close is
greater than ema 16. sell: if ema 14 is less than ema 15, ema 15 is
less than ema 16, and candle close is less than ema 16.