Update README.md

examples/whisper.wasm/README.md

@@ -25,3 +25,19 @@ audio is limited to 120 seconds.
 Link: https://whisper.ggerganov.com
 
 ![image](https://user-images.githubusercontent.com/1991296/197348344-1a7fead8-3dae-4922-8b06-df223a206603.png)
+
+
+## Build instructions
+
+```bash
+# build using Emscripten
+git clone https://github.com/ggerganov/whisper.cpp
+cd whisper.cpp
+mkdir build-em && cd build-em
+emcmake cmake ..
+make -j
+
+# copy the produced page to your HTTP path
+cp bin/whisper.wasm/index.html /path/to/html/
+cp bin/whisper.wasm/whisper.js /path/to/html/
+cp bin/libwhisper.worker.js    /path/to/html/