Added IPinfo

I added ipInfo : https://ipinfo.io/developers

README.md

@@ -194,6 +194,7 @@ API | Description | Auth | HTTPS | Link |
 | HackerRank | Compile source code and run against a set of provided test cases | `apiKey` | Yes | [Go!](https://www.hackerrank.com/api/docs) |
 | import.io | Retrieve structured data from a website or RSS feed | `apiKey` | Yes | [Go!](http://api.docs.import.io/) |
 | IPify | A simple IP Address API | No | Yes | [Go!](https://www.ipify.org/) |
+| IPinfo | Another simple IP Address API | No | Yes | [Go!](https://ipinfo.io/developers) |
 | JSON 2 JSONP | Convert JSON to JSONP (on-the-fly) for easy cross-domain data requests using client-side JavaScript | No | Yes | [Go!](https://json2jsonp.com/) |
 | JSONbin.io | Free JSON storage service. Ideal for small scale Web apps, Websites and Mobile apps | `apiKey` | Yes | [Go!](https://jsonbin.io) |
 | Judge0 API | Compile and run source code | No | Yes | [Go!](https://api.judge0.com/) |