Revert "Removed dead Coinbin link"

This reverts commit 5a51b769d6.

README.md

@@ -155,6 +155,7 @@ API | Description | Auth | HTTPS | Link |
 | Block | Bitcoin Payment, Wallet & Transaction Data | `apiKey` | Yes | [Go!](https://www.block.io/docs/basic) |
 | Blockchain | Bitcoin Payment, Wallet & Transaction Data | No | Yes | [Go!](https://www.blockchain.info/api) |
 | Coinbase | Bitcoin, Litecoin and Ethereum Prices | `apiKey` | Yes | [Go!](https://developers.coinbase.com) |
+| CoinBin | Cryptocurrency information | No | Yes | [Go!](https://coinbin.org/) |
 | CoinDesk | Bitcoin Price Index | No | No | [Go!](http://www.coindesk.com/api/) |
 | CoinMarketCap | Cryptocurrencies Prices | No | Yes | [Go!](https://coinmarketcap.com/api/) |
 | CryptoCompare | Cryptocurrencies Comparison | No | Yes | [Go!](https://www.cryptocompare.com/api#) |