Evolve buzzr to a boîte à meuh

Detect orientation change in js:

```
document.addEventListener("orientationchange", function(event){
switch(window.orientation)
{
case -90: case 90:
/* Device is in landscape mode */
break;
default:
/* Device is in portrait mode */
}
});
```

source: https://stackoverflow.com/questions/14360581/force-landscape-orientation-mode/14360699#14360699

cow mooing sound: https://freesound.org/people/Benboncan/sounds/58277/