Add MCU Countdown API (#1249)

README.md

@@ -950,6 +950,7 @@ API | Description | Auth | HTTPS | CORS |
 | [Final Space](https://finalspaceapi.com/docs/) | Final Space API | No | Yes | Yes |
 | [Game of Thrones Quotes](https://gameofthronesquotes.xyz/) | Some Game of Thrones quotes | No | Yes | Unknown |
 | [Harry Potter](https://www.potterapi.com/) | Harry Potter API | `apiKey` | Yes | Yes |
+| [MCU Countdown](https://github.com/DiljotSG/MCU-Countdown) | A Countdown to the next MCU Film | No | Yes | Yes |
 | [Open Movie Database](http://www.omdbapi.com/) | Movie information | `apiKey` | Yes | Unknown |
 | [Ron Swanson Quotes](https://github.com/jamesseanwright/ron-swanson-quotes#ron-swanson-quotes-api) | Television | No | Yes | Unknown |
 | [STAPI](http://stapi.co) | Information on all things Star Trek | No | No | No |