Add Danbooru (#2249)

README.md

@@ -137,6 +137,7 @@ API | Description | Auth | HTTPS | CORS |
 | [AnimeChan](https://github.com/RocktimSaikia/anime-chan) | Anime quotes (over 10k+) | No | Yes | No |
 | [AnimeFacts](https://chandan-02.github.io/anime-facts-rest-api/) | Anime Facts (over 100+) | No | Yes | Yes |
 | [AnimeNewsNetwork](https://www.animenewsnetwork.com/encyclopedia/api.php) | Anime industry news | No | Yes | Yes |
+| [Danbooru Anime](https://danbooru.donmai.us/wiki_pages/help:api) | Thousands of anime artist database to find good anime art | `apiKey` | Yes | Yes |
 | [Jikan](https://jikan.moe) | Unofficial MyAnimeList API | No | Yes | Yes |
 | [Kitsu](https://kitsu.docs.apiary.io/) | Anime discovery platform | `OAuth` | Yes | Yes |
 | [MangaDex](https://api.mangadex.org/docs.html) | Manga Database and Community | `apiKey` | Yes | Unknown |