Implement Cxihub ticker

[Swingcloud]

• What is the purpose of this Pull Request? as title
• What is the related issue for this Pull Request? resolve #818
• [x] I have added Specs
• [x] (If implementing Market Ticker) I have verified that the volume refers to BASE
• [x] (If implementing Market Ticker) I have verified that the base and target is assigned correctly

ticker on ETH/BTC

{
 "rate": 0.051867,
 "sellString": "0.05291651",
 "buy": 0.0512571,
 "volumeString": "0.00000000",
 "rateString": "0.051867",
 "sell": 0.05291651,
 "changePercent": 0,
 "buyString": "0.05125710",
 "volume": 0,
 "market": "btc/eth"
}

took rate as last and volume as base volume since it's all 0 on all tickers, if it refer to target will send a hotfix PR on it