Update android build.gradle publishing instructions

android/build.gradle

@@ -34,6 +34,9 @@
 //   - Build and upload artifacts with ./gradlew publish
 //   - Close and release staging repo on Nexus with ./gradlew closeAndReleaseStagingRepository
 //
+//   These commands must both be run in the same Gradle invocation:
+//   ./gradlew publish closeAndReleaseStagingRepository
+//
 // The following is needed in ~/gradle/gradle.properties:
 //
 //     sonatypeUsername=nexus_user

web/samples/morphing.html

@@ -38,7 +38,7 @@ class App {
         const onDone = () => {
             loader.delete();
             scene.addEntities(asset.getEntities());
-            this.animator = asset.getInstance().getAnimator();
+            this.animator = asset.getAnimator();
             this.animationStartTime = Date.now();
         };
         asset.loadResources(onDone);