Add Intrinio (#1108)

README.md

@@ -343,6 +343,7 @@ API | Description | Auth | HTTPS | CORS |
 | [Alpha Vantage](https://www.alphavantage.co/) | Realtime and historical stock data | `apiKey` | Yes | Unknown |
 | [IEX Cloud](https://iexcloud.io/docs/api/) | Realtime & Historical Stock and Market Data | `apiKey` | Yes | Yes |
 | [IG](https://labs.ig.com/gettingstarted) | Spreadbetting and CFD Market Data | `apiKey` | Yes | Unknown |
+| [Intrinio](https://intrinio.com/) | A wide selection of financial data feeds | `apiKey` | Yes | Unknown |
 | [marketstack](https://marketstack.com/) | Real-Time, Intraday & Historical Market Data API | `apiKey` | Yes | Unknown |
 | [Plaid](https://plaid.com/) | Connect with users’ bank accounts and access transaction data | `apiKey` | Yes | Unknown |
 | [Razorpay IFSC](https://ifsc.razorpay.com/) | Indian Financial Systems Code (Bank Branch Codes) | No | Yes | Unknown |