Adding SecurityTrails (#679)

* Adding SecurityTrails

The API offers 300 queries p.M. for free, which is enough for most smaller projects, they also offer the API for free for researchers etc.

* Update README.md

* Fixed alphabetical order and shortened description

README.md

@@ -590,6 +590,7 @@ API | Description | Auth | HTTPS | CORS | Link |
 |---|---|---|---|---|---|
 | AXFR Database | AXFR public database | No | No | Unknown | [Go!](http://api.axfrcheck.com) |
 | HaveIBeenPwned | Passwords which have previously been exposed in data breaches | No | Yes | Unknown | [Go!](https://haveibeenpwned.com/API/v2) |
+| SecurityTrails | Domain and IP related information such as current and historical WHOIS and DNS records | `apiKey` | Yes | Unknown | [Go!](https://securitytrails.com/corp/apidocs) |
 | UK Police | UK Police data | No | Yes | Unknown | [Go!](https://data.police.uk/docs/) |
 
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