I would like to add "billboard json"

README.md

@@ -1240,6 +1240,7 @@ API | Description | Auth | HTTPS | CORS |
 | [Audiomack](https://www.audiomack.com/data-api/docs) | Api of the streaming music hub Audiomack | `OAuth` | Yes | Unknown |
 | [Bandcamp](https://bandcamp.com/developer) | API of Music store Bandcamp | `OAuth` | Yes | Unknown |
 | [Bandsintown](https://app.swaggerhub.com/apis/Bandsintown/PublicAPI/3.0.0) | Music Events | No | Yes | Unknown |
+| [Billboard json](https://github.com/KoreanThinker/billboard-json) | Billboard hot 100 chart | No | Yes | No |
 | [Deezer](https://developers.deezer.com/api) | Music | `OAuth` | Yes | Unknown |
 | [Discogs](https://www.discogs.com/developers/) | Music | `OAuth` | Yes | Unknown |
 | [Freesound](https://freesound.org/docs/api/) | Music Samples | `apiKey` | Yes | Unknown |