Add Duply.co

README.md

@@ -392,6 +392,7 @@ API | Description | Auth | HTTPS | CORS |
 | [Icanhazip](https://major.io/icanhazip-com-faq/) | IP Address API | No | Yes | Yes |
 | [IFTTT](https://platform.ifttt.com/docs/connect_api) | IFTTT Connect API | No | Yes | Unknown |
 | [Image-Charts](https://documentation.image-charts.com/) | Generate charts, QR codes and graph images | No | Yes | Yes |
+| [Duply](https://duply.co/docs#getting-started-api) | Dynamic Image creation API | `apiKey` | Yes | Yes |
 | [import.io](http://api.docs.import.io/) | Retrieve structured data from a website or RSS feed | `apiKey` | Yes | Unknown |
 | [IP2WHOIS Information Lookup](https://www.ip2whois.com/) | WHOIS domain name lookup | `apiKey` | Yes | Unknown |
 | [IPify](https://www.ipify.org/) | A simple IP Address API | No | Yes | Unknown |