update README

animations/README.md

@@ -1,16 +1,12 @@
-# animations
+# Animation Samples
+Sample apps that showcasing Flutter's animation features
 
-A new Flutter project.
+## Basics
+**AnimationControllerDemo**
+Demonstrates how to use an `AnimationController`.
 
-## Getting Started
 
-This project is a starting point for a Flutter application.
-
-A few resources to get you started if this is your first Flutter project:
-
-- [Lab: Write your first Flutter app](https://flutter.dev/docs/get-started/codelab)
-- [Cookbook: Useful Flutter samples](https://flutter.dev/docs/cookbook)
-
-For help getting started with Flutter, view our
-[online documentation](https://flutter.dev/docs), which offers tutorials,
-samples, guidance on mobile development, and a full API reference.
+## Misc
+**ExpandCard**
+Demonstrates how to use `AnimatedCrossFade` to fade between two widgets and
+change the size.