feat(babel): Bump up the babel version 5.x to 6.x (reactjs#158)

Author: JisuPark

public/index.html

@@ -7,7 +7,7 @@
     <link rel="stylesheet" href="css/base.css" />
     <script src="https://unpkg.com/[email protected]/dist/react.js"></script>
     <script src="https://unpkg.com/[email protected]/dist/react-dom.js"></script>
-    <script src="https://unpkg.com/babel-[email protected]/browser.min.js"></script>
+    <script src="https://unpkg.com/babel-[email protected]/babel.min.js"></script>
     <script src="https://unpkg.com/[email protected]/dist/jquery.min.js"></script>
     <script src="https://unpkg.com/[email protected]/dist/remarkable.min.js"></script>
   </head>