Add PipeDream (#374)

README.md

@@ -546,6 +546,7 @@
 | [OpenGraphr](https://opengraphr.com/docs/1.0/overview) | Really simple API to retrieve Open Graph data from an URL | `apiKey`| Yes | Unknown |
 | [oyyi](https://oyyi.xyz/docs/1.0) | API for Fake Data, image/video conversion, optimization, pdf optimization and thumbnail generation | No | Yes | Yes |
 | [PageCDN](https://pagecdn.com/docs/public-api) | Public API for javascript, css and font libraries on PageCDN | `apiKey`| Yes | Yes |
+| [PipeDream](https://docs.pipedream.com) | Pipedream is the fastest way to build powerful applications that connect all the services in your stack | `OAuth`| Yes | Unknown |
 | [Postman](https://www.postman.com/postman/workspace/postman-public-workspace/documentation/12959542-c8142d51-e97c-46b6-bd77-52bb66712c9a) | Tool for testing APIs | `apiKey`| Yes | Unknown |
 | [ProxyCrawl](https://proxycrawl.com) | Scraping and crawling anticaptcha service | `apiKey`| Yes | Unknown |
 | [ProxyKingdom](https://proxykingdom.com) | Rotating Proxy API that produces a working proxy on every request | `apiKey`| Yes | Yes |