Implementing a new Future Exchange

Implementing a new Future Exchange is identical to https://github.com/coingecko/cryptoexchange/wiki/Implementing-a-New-Exchange-(HTTP-API) except several things to watch out for below

Things to pay attention to

• Futures/Derivatives exchange can display their ticker volume in number of contracts, base, target
• Keep in mind the volume should always be in terms of base regardless of the unit the exchange returns
• Futures/Derivatives exchange sometimes display bilateral volume (meaning double counting the volume for tickers) refers to https://github.com/coingecko/cryptoexchange/blob/master/lib/cryptoexchange/exchanges/huobi_dm/services/market.rb you need to halve that.