boxart and screenshot

README.md

@@ -4,6 +4,15 @@ a small game made in 48 hours on live stream
  - [windows build](https://github.com/NoelFB/tiny_link/releases/tag/v1.0.0)
  - [stream archive](https://twitch.tv/noelfb)
  
- ### building
+### building
   - You need C++17 and CMake
   - Make sure you have SDL2 headers & DLLs, and make sure CMake can find them
+
+![Screenshot](https://github.com/noelfb/tiny_link/raw/master/screenshot.png "Screenshot")
+
+### box art
+![box art](https://github.com/noelfb/tiny_link/raw/master/boxart.jpg "Box art by Grayson")
+
+*box art by [Grayson](https://twitter.com/soft_rumpus/status/1345934041527144459/photo/1)*
+*Mosquito enemy sprite by [Randy](https://twitter.com/RandyPGaul))*
+