Increase server rendering performance

[michaelBenin]

Thread here: facebook/react#812

In initializer for server use this snippet:

if (process.env.NODE_ENV === 'production') {
    require('react/dist/react.min.js');
    require.cache[require.resolve('react')] = require.cache[require.resolve('react/dist/react.min.js')];

    require('react-dom/dist/react-dom-server.min.js');
    require.cache[require.resolve('react-dom/server')] = require.cache[require.resolve('react-dom/dist/react-dom-server.min.js')];
}

[michaelBenin]

In 6.0.0