Added Superhero API (#939)

* Added Superhero API

* Added Superhero API

* Added SuperHero API

* Fixed typo in description as per PR review comments

README.md

@@ -428,6 +428,7 @@ API | Description | Auth | HTTPS | CORS |
 | [Riot Games](https://developer.riotgames.com/) | League of Legends Game Information | `apiKey` | Yes | Unknown |
 | [Scryfall](https://scryfall.com/docs/api) | Magic: The Gathering database | No | Yes | Yes |
 | [Steam](https://developer.valvesoftware.com/wiki/Steam_Web_API) | Steam Client Interaction | `OAuth` | Yes | Unknown |
+| [SuperHeroes](https://superheroapi.com) | All SuperHeroes and Villains data from all universes under a single API | `apiKey` | Yes | Unknown |
 | [Tronald Dump](https://www.tronalddump.io/) | The dumbest things Donald Trump has ever said | No | Yes | Unknown |
 | [Vainglory](https://developer.vainglorygame.com/) | Vainglory Players, Matches and Telemetry | `apiKey` | Yes | Yes |
 | [Wargaming.net](https://developers.wargaming.net/) | Wargaming.net info and stats | `apiKey` | Yes | No |