Updated readme.

Author: Chriztiaan

tools/powersynctests/README.md

@@ -40,3 +40,30 @@ pnpm ios
 ```sh
 pnpm android
 ```
+
+4. Run tests
+
+### iOS
+
+```sh
+detox test --configuration ios.sim.debug
+```
+
+### Android
+
+````sh
+pnpm detox test --configuration android.emu.debug
+
+5. Building
+
+### iOS
+
+```sh
+pnpm detox build --configuration ios.sim.debug
+````
+
+### Android
+
+```sh
+pnpm detox build --configuration android.emu.debug
+```