react-router cdn changed - removed cdn for react packages

index.html

@@ -8,9 +8,6 @@
     <meta name="author" content="Mitchell Gerber">
     <link href="https://fonts.googleapis.com/css?family=Roboto+Slab:300,400" rel="stylesheet">
     <script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/9.7.0/highlight.min.js"></script>
-    <script src="https://unpkg.com/react@15/dist/react.min.js"></script>
-    <script src="https://unpkg.com/react-dom@15/dist/react-dom.min.js"></script>
-    <script src="https://unpkg.com/react-router/umd/ReactRouter.min.js"></script>
     <title>Mitchell Gerber</title>
 </head>
 

webpack.config.js

@@ -38,10 +38,7 @@ module.exports = {
   },
   plugins: getPlugins(),
   externals:{
-    "hljs": "hljs",
-    "react": "React",
-    "react-dom": "ReactDOM",
-    "react-router": "ReactRouter"
+    "hljs": "hljs"
   }
 };