[fix] Easing import when using babel plugin

Fix #649

src/apis/Easing/index.js

@@ -0,0 +1,13 @@
+/**
+ * Copyright (c) 2016-present, Nicolas Gallagher.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @providesModule Easing
+ * @noflow
+ */
+
+import Easing from 'animated/lib/Easing';
+export default Easing;

src/module.js

@@ -12,7 +12,7 @@ export { default as AsyncStorage } from './apis/AsyncStorage';
 export { default as BackAndroid } from './apis/BackAndroid';
 export { default as Clipboard } from './apis/Clipboard';
 export { default as Dimensions } from './apis/Dimensions';
-export { default as Easing } from 'animated/lib/Easing';
+export { default as Easing } from './apis/Easing';
 export { default as I18nManager } from './apis/I18nManager';
 export { default as Keyboard } from './apis/Keyboard';
 export { default as InteractionManager } from './apis/InteractionManager';