return the ratio of the coinpair via Huobi.pro

#install npm install coinmarket -s

#usage example:

1. get btcusdt coinpair ratio

  
  
  (async ()=>{
  let res=await coinmarket.RatioCoinpair("btcusdt")

  
  })();

return ratio:
{ 
  open: 8231.63,
  close: 8164.16,
  low: 8076.06,
  high: 8277.12,
  amount: 10272.949423936838,
  count: 146588,
  vol: 84071659.2274929,
  symbol: 'btcusdt'
}

open =open price
close=latest price
low=lowest price
high=highest price

2. get ethusdt coinpair ratio

  (async ()=>{
  let res=await coinmarket.RatioCoinpair("ethusdt")

  
  })();

3. the input you can use like bchusdt, ltcusdt etc.

#For China user: Since the GFW block the huobi api url,so you can use below api to get the current price .

1. get the btcusdt coinpair ratio:

    
    
    (async ()=>{
    let res=await coinmarket.RatioCoinpairBypassGFW("usdt-btc")
  
    
    })();

return the lastest ratio directly.

2. you can get the bch,eth like the input format: usdt-bch, usdt-eth.