title: using async/await with webpack-simple configuration throwing error: RegeneratorRuntime not defined
body: <p>I am using  webpack-simple template with following configurations:</p>
  
  <p><strong>package.json</strong></p>
  
  <pre><code>{
    "name": "vue-wp-simple",
    "description": "A Vue.js project",
    "version": "1.0.0",
    "author": "v",
    "private": true,
    "scripts": {
      "dev": "webpack-dev-server --inline --hot",
      "build": "cross-env NODE_ENV=production webpack --progress --hide-modules"
    },
    "dependencies": {
      "vue": "^2.3.3",
      "vue-router": "^2.7.0",
  
    },
    "devDependencies": {
      "babel-core": "^6.0.0",
      "babel-loader": "^6.0.0",
      "babel-preset-env": "^1.5.1",
      "babel-preset-es2015": "^6.24.1",
      "babel-preset-stage-2": "^6.24.1",
      "cross-env": "^3.0.0",
      "css-loader": "^0.25.0",
      "file-loader": "^0.9.0",
      "style-loader": "^0.18.2",
      "stylus": "^0.54.5",
      "stylus-loader": "^3.0.1",
      "vue-loader": "^12.1.0",
      "vue-template-compiler": "^2.3.3",
      "webpack": "^2.6.1",
      "webpack-dev-server": "^2.4.5"
    }
  } 
  </code></pre>
  
  <p><strong>.babelrc</strong></p>
  
  <pre><code>{
    "presets": [
      ["env", { "modules": false }],
    ]
  } 
  </code></pre>
  
  <p>below is how I use async/await in my component</p>
  
  <pre><code>async mounted(){
              //this.$store.dispatch('loadImg', this.details.imgUrl).then((img) =&gt; {
                  //this.drawImage(img);    
              //});
  
              var result = await this.loadImg();
              console.log(result);
          },
          methods:{
              async loadImg(){
                  return new Promise((resolve, reject) =&gt; {
                      setTimeout(() =&gt; {
                          resolve('yeah async await works!');
                      }, 2000);
                  });
              }, 
           }
  </code></pre>
  
  <p>But when I run the app I get the error:
  <strong>ReferenceError: regeneratorRuntime is not defined</strong>
  and even the component is not being displayed</p>