Add Quip (#2284)

README.md

@@ -281,6 +281,7 @@ API | Description | Auth | HTTPS | CORS |
 | [OneDrive](https://dev.onedrive.com/) | File Sharing and Storage | `OAuth` | Yes | Unknown |
 | [Pantry](https://getpantry.cloud/) | Free JSON storage for small projects | No | Yes | Yes |
 | [Pastebin](https://pastebin.com/doc_api) | Plain Text Storage | `apiKey` | Yes | Unknown |
+| [Quip](https://quip.com/dev/automation/documentation) | File Sharing and Storage for groups | `apiKey` | Yes | Yes |
 | [Web3 Storage](https://web3.storage/) | File Sharing and Storage for Free with 1TB Space | `apiKey` | Yes | Yes |
 
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