add Lichess-API

README.md

@@ -428,6 +428,7 @@ API | Description | Auth | HTTPS | CORS |
 | [Jokes](https://github.com/15Dkatz/official_joke_api) | Programming and general jokes | No | Yes | Unknown |
 | [Jokes One](https://jokes.one/api/joke/) | Joke of the day and large category of jokes accessible via REST API | `apiKey` | Yes | Yes |
 | [Jservice](http://jservice.io) | Jeopardy Question Database | No | No | Unknown |
+| [Lichess](https://lichess.org/api) | Access to all data of users, games, puzzles and etc on Lichess | `OAuth` | Yes | Unknown |
 | [Magic The Gathering](http://magicthegathering.io/) | Magic The Gathering Game Information | No | No | Unknown |
 | [Marvel](http://developer.marvel.com) | Marvel Comics | `apiKey` | No | Unknown |
 | [mod.io](https://docs.mod.io) | Cross Platform Mod API | `apiKey` | Yes | Unknown |