Update documentation to match last commit.

doc/events.md

@@ -8,7 +8,7 @@ Fired when a panorama finishes loading.
 ## `scenechange`
 
 Fired when a scene change is initiated. A `load` event will be fired when the
-new scene finishes loading.
+new scene finishes loading. Passes scene ID string to handler.
 
 
 ## `error`