add Spyfall to game section

README.md

@@ -684,6 +684,7 @@ _Command-line file upload_
   * [Hextris](https://github.com/Hextris/hextris) - Fast paced HTML5 puzzle game inspired by Tetris. ([Demo](http://hextris.io/)) `GPLv3` `HTML5`
   * [Posio](https://github.com/abrenaut/posio/) - A geography multiplayer game. ([Demo](https://posio.abrenaut.com/)) `MIT` `Python`
   * [SourceBans++](https://sbpp.github.io) - Admin, ban, and communication management system for games running on the Source engine. ([Source Code](https://github.com/sbpp/sourcebans-pp)) `CCBYSA` `PHP`
+  * [Spyfall](https://github.com/mpcovcd/spyfall) - Fan made web version of the Spyfall party game. ([Demo](http://spyfall.crabhat.com/)) `MIT` `HTML/Javascript`
   * [TournamentMango](http://tournamentmango.com/) - TournamentMango is an open source tournament bracket and user management system. You can build an archive of players and keep track of all their scores over time as well as their regular characters, games, and aliases. ([Source Code](https://github.com/seiyria/tournamentmango)) `MIT` `Javascript`