Draw data from Coinmarketcap

[erickmoura]

Each exchange has its own set of supported coins and their values are specific within their own specific markets.
Coinmarketcap.com will provide a rich list of cryptocurrencies and their (supposedly global) market values.
We need to create a new bot that will poll and store in ES the tickers of all altcoins (USD prices only for now).

Please refer to:
https://coinmarketcap.com/api/
and
https://coinmarketcap.com

Although we want to make our data as real-time as possible, please beware of possible API limits of usage. Let's do a poll as frequent as possible (if every second, or split second, or half minute) as long as we stay under the API limit (you'll need to investigate in their website).