HOW_CHEAP_IN_SATOSHI(beta version)

This scripts is only targeted for 'ALT COIN/BTC' pair

This calculate how cheap the current price is based on historical price

Blue line(historical average expectation price ratio)

Orange line(historical maximum expectation price ratio)

Red line(historical extreme expectation price ratio)

릴리즈 노트: 1. out of index error fixed
2. add interval input for users to adjust it