Update README.md

added `make prepare` instruction
badgeteam · Apr 22, 2024 · e6b8f47 · e6b8f47
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diff --git a/README.md b/README.md
@@ -43,6 +43,8 @@ To select target chip, choose one of:
 - `export BADGEROS_PORT=esp32p4`
 - `export BADGEROS_PORT=esp32c6` (default)
 
+Before building, first run: `make prepare`
+
 To build: `make build`
 
 To remove build files: `make clean`