added Blynk-cloud API

added Blynk-cloud API to Development

README.md

@@ -366,6 +366,7 @@ API | Description | Auth | HTTPS | CORS |
 | [Base](https://www.base-api.io/) | Building quick backends | `apiKey` | Yes | Yes |
 | [Bitbucket](https://developer.atlassian.com/bitbucket/api/2/reference/) | Bitbucket API | `OAuth` | Yes | Unknown |
 | [Blitapp](https://blitapp.com/api/) | Schedule screenshots of web pages and sync them to your cloud | `apiKey` | Yes | Unknown |
+| [Blynk-Cloud](https://blynkapi.docs.apiary.io/#) | Control IoT Devices from Blynk IoT Cloud | `apiKey` | No | Unknown |
 | [Bored](https://www.boredapi.com/) | Find random activities to fight boredom | No | Yes | Unknown |
 | [Browshot](https://browshot.com/api/documentation) | Easily make screenshots of web pages in any screen size, as any device | `apiKey` | Yes | Yes |
 | [CDNJS](https://api.cdnjs.com/libraries/jquery) | Library info on CDNJS | No | Yes | Unknown |