Update README with screenshots

README.md

@@ -1,2 +1,42 @@
 # gameyfin
-A simple game library manager
+A simple game library manager.
+Name and functionality inspired by [Jellyfin](https://jellyfin.org/).
+
+## Features
+
+* Automatically scans your game library folder
+* Load additional information about the games from IGDB
+* Display your library in a modern web frontend
+* Download games directly from your browser
+* Search and filter your game library
+* Offline-friendly (once the library has been scanned everything is cached locally)
+* Easy to host yourself thanks to native Docker support (alternatively it's only one .jar file to run on bare metal)
+* Light and dark theme
+
+### Differences to other game library software
+
+In the past I used [Grifter](https://github.com/terrybrash/grifter) to manage my game library, and I was (and still am) happy with it.  
+However, Grifter has some limitations that I could not work around, so I decided to develop my own app.
+
+Grifter does not support auto-discovery of games in your library folder. Instead, you have to manually add all files and their corresponding IGDB-slugs to a config file.
+Also, Grifter only supports to download one file per game. Since I also have games consisting of multiple files I was not able to download them from the browser with Grifter.
+Gameyfin fixes both these limitations: It can scan your library for games and automatically match them on IGDB to load additional information.
+It can also deal with games consisting of multiple files by packing them into a .zip folder in realtime if necessary.
+
+## Screenshots
+
+### Game library screen in light mode (top) and dark mode (bottom)
+![Game library](assets/library_overview.png)
+
+### Game detail view
+![Game detail screen](assets/game_detail_view.png)
+
+### Automatic library scanning
+![Library scan hint](assets/scan_library.png)
+
+### Admin interface
+![Admin interface](assets/game_mappings.png)
+
+### Manually fix incorrect mappings (with autocomplete suggestions)
+![Fix mapping dialog](assets/fix_game_mapping.png)
+