Use native animations in TouchableBounce and TouchableOpacity

Summary:
Now that native animations for opacity and springs have landed in both iOS and Android, we can enable native animations both for TouchableBounce and TouchableOpacity.
Closes https://github.com/facebook/react-native/pull/10583

Differential Revision: D4099819

Pulled By: lacker

fbshipit-source-id: 247d7bff9a778e520af764f571caf6286b4a5749

Libraries/Components/Touchable/TouchableBounce.js

@@ -88,6 +88,7 @@ var TouchableBounce = React.createClass({
       toValue: value,
       velocity,
       bounciness,
+      useNativeDriver: true,
     }).start(callback);
   },
 

Libraries/Components/Touchable/TouchableOpacity.js

@@ -87,7 +87,7 @@ var TouchableOpacity = React.createClass({
   setOpacityTo: function(value: number) {
     Animated.timing(
       this.state.anim,
-      {toValue: value, duration: 150}
+      {toValue: value, duration: 150, useNativeDriver: true}
     ).start();
   },