feat(svgr-loader): include Babel transformation

Closes #45

.babelrc

@@ -1,13 +1,16 @@
 {
   "presets": [
-    ["env", {
-      "targets": {
-        "node": "6"
+    [
+      "@babel/preset-env",
+      {
+        "targets": {
+          "node": "6"
+        }
       }
-    }]
+    ]
   ],
   "plugins": [
-    "transform-class-properties",
-    "transform-object-rest-spread"
+    "@babel/plugin-proposal-class-properties",
+    "@babel/plugin-proposal-object-rest-spread"
   ]
 }

README.md

@@ -230,7 +230,7 @@ In your `webpack.config.js`:
 ```js
 {
   test: /\.svg$/,
-  use: ['babel-loader', 'svgr/webpack'],
+  use: ['svgr/webpack'],
 }
 ```
 

examples/webpack/package.json

@@ -1,8 +1,6 @@
 {
   "name": "svgr-webpack-example",
   "devDependencies": {
-    "babel-core": "^6.26.0",
-    "babel-loader": "^7.1.2",
     "url-loader": "^0.6.2",
     "webpack": "^3.10.0"
   }

examples/webpack/webpack.config.js

@@ -10,19 +10,11 @@ module.exports = {
     rules: [
       {
         test: /url\.svg$/,
-        use: [
-          'babel-loader',
-          require.resolve('../../lib/webpack'),
-          'url-loader',
-        ],
+        use: [require.resolve('../../webpack'), 'url-loader'],
       },
       {
         test: /simple\.svg$/,
-        use: ['babel-loader', require.resolve('../../lib/webpack')],
-      },
-      {
-        test: /\.js$/,
-        use: ['babel-loader'],
+        use: [require.resolve('../../webpack')],
       },
     ],
   },