title: webpack+angular2 error: Uncaught ReferenceError: __decorate is not defined
body: <p>chrome console error: Uncaught ReferenceError: __decorate is not defined
  this is code <a href="https://github.com/Dreampie/angular2-demo">https://github.com/Dreampie/angular2-demo</a></p>
  
  <p>run it:</p>
  
  <p>npm install</p>
  
  <p>npm run typings install</p>
  
  <p>npm run start</p>
  
  <p>open localhost:80 in browser</p>
  
  <p>someone help?</p>