Edit README.md

README.md

@@ -58,3 +58,17 @@ Temperature: 42°C
 
 - Prometheus endpoint
 - Test Wifi
+
+# Build
+
+1. Setup ESP IDF
+   - Using Nix
+     ```
+     nix develop
+     ```
+   - Manually
+     - Check correct version in flake
+     - Setup IDF per docs: https://docs.espressif.com/projects/esp-idf/en/stable/esp32/get-started/index.html#installation
+2. Configure?
+3. Compile
+4. Flash