title: angular-cli how to split output js files to vendor and script js file
body: <p>I want to split all my angular2, rxjs and other library JavaScript to one file ( vendor.js ) and all my project related files to one file ( script.js ) while building using <code>ng build</code> in angular-cli?</p>
  
  <p>I dont not see any where I can mention and split in angular-cli.json</p>
  
  <p>The default angular-cli automatically creates init.js, main.bundle.js and style.bundle.js</p>