Rename app_init to android_init

readme.md

@@ -25,7 +25,7 @@ application-id = "com.example.myapp"
 label = "My app"
 ```
 
-`#[iris::app_init]` marks the initializer called when Android creates the Iris
+`#[iris::android_init]` marks the initializer called when Android creates the Iris
 view. The attribute supplies its own Android target gate and generates the JNI
 loader glue. An application with no state beyond the UI state receives
 `AndroidUiState` directly by mutable reference:
@@ -37,7 +37,7 @@ fn build<Rsc: UiRsc>(rsc: &mut Rsc, ui_state: &mut impl HasRoot<Rsc>) {
     rect(PaintId::RED).set_root(rsc, ui_state);
 }
 
-#[iris::app_init]
+#[iris::android_init]
 fn create(
     ui_state: &mut AndroidUiState,
     rsc: &mut StdRsc<AndroidUiState>,