trouble shouting with webpack and rails

gistfile1.txt

1) rails new turbo
2) rails g scaffold post
3) rake db:migrate

IN YO MAN
mkdir client && cd $_
yo react-webpack

1) create client-bundle.js 
2) webpack-dev-server/client?http://localhost:8000 in webpack
3)  output: {
     filename: 'assets/client-bundle.self.js',
     path: __dirname,
     publicPath: 'http://localhost:8000/' // Required for webpack-dev-server
  },
4) grunt clean webpack-dev-server entry
5) rails developers.rb
 config.action_controller.asset_host = Proc.new do |source|
   if source =~ /client-bundle/
     "http://localhost:8000/"
    end
  end
  config.assets.digest = false
7) <div id="content"> </div> “entry point” in Post index
8) In client app :
document.addEventListener("DOMContentLoaded", function(event) { 
  React.render(<ClientApp />, document.getElementById('content')); // jshint ignore:line
});
9)grunt webpack-dev-server