Added a reasonable config for autoprefixer (resolves #73) (#345)

* Added a reasonable config for autoprefixer (resolves #73)

* Moved autoprefixer config to webpack.config

config/webpack.config.dev.js

@@ -98,7 +98,16 @@ module.exports = {
     useEslintrc: false
   },
   postcss: function() {
-    return [autoprefixer];
+    return [
+      autoprefixer({
+        browsers: [
+          '>1%',
+          'last 4 versions',
+          'Firefox ESR',
+          'not ie < 9',
+        ]
+      }),
+    ];
   },
   plugins: [
     new HtmlWebpackPlugin({

config/webpack.config.prod.js

@@ -108,7 +108,16 @@ module.exports = {
     useEslintrc: false
   },
   postcss: function() {
-    return [autoprefixer];
+    return [
+      autoprefixer({
+        browsers: [
+          '>1%',
+          'last 4 versions',
+          'Firefox ESR',
+          'not ie < 9',
+        ]
+      }),
+    ];
   },
   plugins: [
     new HtmlWebpackPlugin({