Update README.md and Makefile

Author: sago35

Makefile

@@ -5,8 +5,6 @@ smoketest: FORCE
 	tinygo build -o ./out/jumpingopher.zero-kb02.uf2 --target ./targets/zero-kb02.json --size short ./games/jumpingopher/
 	tinygo build -o ./out/blocks.zero-kb02.uf2       --target ./targets/zero-kb02.json --size short ./games/blocks/
 	tinygo build -o ./out/all.gopher-badge.uf2          --target gopher-badge --size short ./games/all/
-	tinygo build -o ./out/flappygopher.gopher-badge.uf2 --target gopher-badge --size short ./games/flappygopher/
-	tinygo build -o ./out/jumpingopher.gopher-badge.uf2 --target gopher-badge --size short ./games/jumpingopher/
-	tinygo build -o ./out/blocks.gopher-badge.uf2       --target gopher-badge --size short ./games/blocks/
+	tinygo build -o ./out/all.macropad-rp2040.uf2          --target macropad-rp2040 --size short ./games/all/
 
 FORCE:

README.md

@@ -39,6 +39,9 @@ more info : [./games/jumpingopher](./games/jumpingopher)
 
 The other games are located under [./games](./games).
 
+Refer to the [Makefile](./Makefile) for instructions on how to build.
+
+
 # Add new hardware
 
 When adding new hardware, please refer to [#7](https://github.com/sago35/koebiten/pull/7).