more cryptocurrency apis (#819)

* crypto apis

* tick fixes

* ICObench data api

Zloader API

Voltaire API

Coin Ranking API

* remove spacing in coin rank

* remove voltaire

README.md

@@ -185,15 +185,18 @@ API | Description | Auth | HTTPS | CORS |
 | [CoinLayer](https://coinlayer.com) | Real-time Crypto Currency Exchange Rates | `apiKey` | Yes | Unknown |
 | [CoinMarketCap](https://coinmarketcap.com/api/) | Cryptocurrencies Prices | No | Yes | Unknown |
 | [Coinpaprika](https://api.coinpaprika.com) | Cryptocurrencies prices, volume and more | No | Yes | Yes |
+| [CoinRanking](https://docs.coinranking.com/) | Live Cryptocurrency data | No | Yes | Unknown |
 | [CryptoCompare](https://www.cryptocompare.com/api#) | Cryptocurrencies Comparison | No | Yes | Unknown |
 | [Cryptonator](https://www.cryptonator.com/api/) | Cryptocurrencies Exchange Rates | No | Yes | Unknown |
 | [Gemini](https://docs.gemini.com/rest-api/) | Cryptocurrencies Exchange | No | Yes | Unknown |
+| [ICObench](https://icobench.com/developers) | Various information on listing, ratings, stats, and more | `apiKey` | Yes | Unknown |
 | [Livecoin](https://www.livecoin.net/api) | Cryptocurrency Exchange | No | Yes | Unknown |
 | [MercadoBitcoin](https://www.mercadobitcoin.net/api-doc/) | Brazilian Cryptocurrency Information | No | Yes | Unknown |
 | [Nexchange](https://nexchange2.docs.apiary.io/) | Automated cryptocurrency exchange service | No | No | Yes |
 | [NiceHash](https://www.nicehash.com/doc-api) | Largest Crypto Mining Marketplace | `apiKey` | Yes | Unknown |
 | [Poloniex](https://poloniex.com/support/api/) | US based digital asset exchange | `apiKey` | Yes | Unknown |
 | [WorldCoinIndex](https://www.worldcoinindex.com/apiservice) | Cryptocurrencies Prices | `apiKey` | Yes | Unknown |
+| [Zloader](https://www.zloadr.com/cryptocurrency-developers.php) | Due diligence data platform | `apiKey` | Yes | Unknown |
 
 ### Currency Exchange
 API | Description | Auth | HTTPS | CORS |