Apply autoprefixer for example

package.json

@@ -63,6 +63,7 @@
     "node-sass": "^3.10.0",
     "npm-run-all": "^3.0.0",
     "postcss": "^5.2.4",
+    "postcss-loader": "^1.1.1",
     "power-assert": "^1.3.1",
     "rollup": "^0.36.0",
     "rollup-plugin-babel": "^2.6.1",

scripts/webpack.config.example.js

@@ -1,4 +1,12 @@
 const path = require('path')
+const webpack = require('webpack')
+const autoprefixer = require('autoprefixer')
+
+const postcss = [
+  autoprefixer({
+    browsers: ['> 1%', 'last 2 versions', 'IE >= 9']
+  })
+]
 
 module.exports = {
   context: path.resolve(__dirname, '../example'),
@@ -21,10 +29,18 @@ module.exports = {
     rules: [
       { enforce: 'pre', test: /\.scss/, loader: 'sass-loader' },
       { test: /\.js$/, loader: 'babel-loader', exclude: /(node_modules|dist)/ },
-      { test: /\.s?css$/, loader: 'style-loader!css-loader' },
+      { test: /\.s?css$/, loader: 'style-loader!css-loader!postcss-loader' },
       { test: /\.vue$/, loader: 'vue-loader' }
     ]
   },
+  plugins: [
+    new webpack.LoaderOptionsPlugin({
+      test: /\.s?css$/,
+      options: {
+        postcss
+      }
+    })
+  ],
   devServer: {
     contentBase: './example'
   }