Summary:
npm 3 is working fine especially if you use shrinkwrap at the end. we've been using it for a month+ and the dependency deduping works well.
Closes https://github.com/facebook/react-native/pull/5391
Reviewed By: svcscm
Differential Revision: D2839472
Pulled By: androidtrunkagent
fb-gh-sync-id: 33e551185236694ee5979da701312f12e2582f3c