v0.9.4: added some missed 0.9.4 code to open source

services/src/main/java/com/shatteredpixel/shatteredpixeldungeon/services/updates/UpdateService.java

@@ -50,6 +50,10 @@ public abstract class UpdateService {
 		public abstract void onComplete();
 	}
 
+	public abstract boolean supportsReviews();
+
 	public abstract void initializeReview( ReviewResultCallback callback );
 
+	public abstract void openReviewURI();
+
 }