Add Solana JSON RPC (#2736)

README.md

@@ -377,6 +377,7 @@ API | Description | Auth | HTTPS | CORS |
 | [Nomics](https://nomics.com/docs/) | Historical and realtime cryptocurrency prices and market data | `apiKey` | Yes | Yes |
 | [NovaDax](https://doc.novadax.com/en-US/#introduction) | NovaDAX API to access all market data, trading management endpoints | `apiKey` | Yes | Unknown |
 | [Poloniex](https://poloniex.com/support/api/) | US based digital asset exchange | `apiKey` | Yes | Unknown |
+| [Solana JSON RPC](https://docs.solana.com/developing/clients/jsonrpc-api) | Provides various endpoints to interact with the Solana Blockchain | No | Yes | Unknown |
 | [Technical Analysis](https://technical-analysis-api.com) | Cryptocurrency prices and technical analysis | `apiKey` | Yes | No |
 | [VALR](https://docs.valr.com/) | Cryptocurrency Exchange based in South Africa | `apiKey` | Yes | Unknown |
 | [Wazirx](https://wazirx.github.io/) | Cryptocurrencies Exchange | `apiKey` | Yes | Unknown |