old_contents: // Simple rollup config file.
  
  const vue = require('../dist/rollup-plugin-vue.common.js');
  
  export default {
      plugins: [ vue() ],
  };
  
new_contents: // Simple rollup config file.
  
  const vue = require('../dist/rollup-plugin-vue.common.js');
  const buble = require('rollup-plugin-buble');
  export default {
      plugins: [ vue({compileTemplate: true}), buble() ],
  };
  
subject: Add buble to example rollup config file