Enable target as instance experiment

Summary:
This diff is just here to make it easier for me to work on the stack. It needs to be ripped out of the stack before landing

Changelog:
[Breaking][General] The `target` field of events is now a native component, not a react tag

Reviewed By: mdvacca

Differential Revision: D19458361

fbshipit-source-id: 1d03a58553cf96dc72f6d1323dfb37b1a8cdca75

Author: elicwhite

Libraries/Renderer/shims/ReactFeatureFlags.js

@@ -12,7 +12,7 @@
 
 const ReactFeatureFlags = {
   debugRenderPhaseSideEffects: false,
-  enableNativeTargetAsInstance: false,
+  enableNativeTargetAsInstance: true,
 };
 
 module.exports = ReactFeatureFlags;