Add link to 2048 game in README

Previously linked to 2048game.com. This site hosts the 2048 game but is not an official copy. Updated to play2048.co. This is an official version of the game made by the original creator, Gabriele Cirulli (originally hosted at https://gabrielecirulli.github.io/2048)

README.md

@@ -47,6 +47,7 @@ _Source:_ [Google Developers - Progressive Web Apps](https://developers.google.c
 * [Bento-starter](https://bento-starter.firebaseapp.com): Open-Source Full-Stack solution for fast PWA development
 * [Best Markdown Editor](https://bestmarkdowneditor.com): undefined
 * [BitMidi](https://bitmidi.com): Listen to your favorite MIDI files.
+* [2048 Game](https://play2048.co/) 2048 Game
 * [Booksie](https://www.booksie.org/): An open catalog of free picture storybooks for children instantly available for reading.
 * [Brutalist Hacker News](https://brutalisthackernews.com): A Hacker News reader inspired by Brutalist Web design, Cyberpunk, retro computing, Y2K Aesthetics 
 * [Budget Tracker](https://btapp.netlify.com/): Track expenses and analyse if they stick to a budget