Update parser option

Author: khiga8

lib/configs/react.js

@@ -1,6 +1,9 @@
 module.exports = {
-  env: {
-    browser: true
+  parserOptions: {
+    sourceType: 'module',
+    ecmaFeatures: {
+      jsx: true
+    }
   },
   plugins: ['github', 'jsx-a11y'],
   extends: ['plugin:jsx-a11y/recommended'],