code: function getMarketCaps() {
  
      return new Promise(function (resolve, reject) {
  
          scraper
              .get(urlMarketCap)
              .then(function(tableData) {
                  const coinmarketcapTable = tableData[0];
                  resolve(getAllMarketCaps(coinmarketcapTable));
              });
      });
  }
docs: Return array of market capitalizations, in order of size.