Add Veriphone to data validation section

Added Veriphone to data validation section

README.md

@@ -240,6 +240,7 @@ API | Description | Auth | HTTPS | CORS |
 | [US Extract](https://smartystreets.com/products/apis/us-extract-api) | Extract postal addresses from any text including emails | `apiKey` | Yes | Yes |
 | [US Street Address](https://smartystreets.com/docs/cloud/us-street-api) | Validate and append data for any US postal address | `apiKey` | Yes | Yes |
 | [vatlayer](https://vatlayer.com) | VAT number validation | No | Yes | Unknown |
+| [Veriphone](https://veriphone.io) | Phone number validation & carrier lookup | `apiKey` | Yes | Yes |
 
 **[⬆ Back to Index](#index)**
 ### Development