title: Can I change the process.env.NODE_ENV in dev?
body: <p>I'm using a node package API client in my react-native project that uses the process.env.NODE_ENV to determine whether to return development or production data.  I'd like to test it in my dev environment (simulator) against the production database (it's read-only and the data greatly differs between dev and prod).</p>
  
  <p>From what I can tell from this:
  <a href="https://github.com/reactjs/react-redux/issues/39#issuecomment-131415769" rel="nofollow">https://github.com/reactjs/react-redux/issues/39#issuecomment-131415769</a>
  process.env.NODE_ENV is set to development by default when the dev flag is true.  </p>
  
  <p>I've tried setting the NODE_ENV to production in my environment but it isn't picked up in the actual simulator (it still says development).</p>
  
  <p>Is there some way to specify this when starting up or using run-*?</p>