Add Ziptastic API

README.md

@@ -440,6 +440,7 @@ API | Description | Auth | HTTPS | CORS |
 | [ViaCep](https://viacep.com.br) | Brazil RESTful zip codes API | No | Yes | Unknown |
 | [Zipcodeapi](https://www.zipcodeapi.com) | Find out possible zip codes for a city, distance between zip codes etc | `apiKey` | Yes | Unknown |
 | [Zippopotam](http://www.zippopotam.us) | Get information about place such as country, city, state, etc | No | No | Unknown |
+| [Ziptastic](https://ziptasticapi.com/) | Get the country, state, and city of any US zip-code | No | Yes | Unknown |
 
 ### Government
 API | Description | Auth | HTTPS | CORS |