Added Buffy the Vampire Slayer and Angel API (#161)

README.md

@@ -1777,6 +1777,7 @@
 | [Bob's Burgers](https://bobs-burgers-api-ui.herokuapp.com) | Bob's Burgers API | No | Yes | Yes |
 | [Breaking Bad](https://breakingbadapi.com/documentation) | Breaking Bad API | No | Yes | Unknown |
 | [Breaking Bad Quotes](https://github.com/shevabam/breaking-bad-quotes) | Some Breaking Bad quotes | No | Yes | Unknown |
+| [Buffy the Vampire Slayer and Angel](https://github.com/Thatskat/btvs-angel-api) | Get episode, cast and crew data from Buffy the Vampire Slayer and Angel | No | Yes | Yes |
 | [Catalogopolis](https://api.catalogopolis.xyz/docs/) | Doctor Who API | No | Yes | Unknown |
 | [Czech Television](http://www.ceskatelevize.cz/xml/tv-program/) | TV programme of Czech TV | No | No | Unknown |
 | [Dailymotion](https://developer.dailymotion.com/) | Dailymotion Developer API | `OAuth`| Yes | Unknown |