Site now works with IE! (And Google Bot Hopefully)

.babelrc

@@ -2,10 +2,21 @@
   "presets": [
     ["env", {
       "targets": {
-          "node": "current"
-        }
+        "node": "current",
+        "browsers": [
+          "Chrome >= 41",
+          "FireFox >= 44",
+          "Safari >= 7",
+          "Explorer 11",
+          "last 4 Edge versions"
+        ]
+      },
+      "useBuiltIns": false
     }],
     "react",
     "babel-polyfill"
+  ],
+  "ignore": [
+    "node_modules"
   ]
 }

public/index.jsx

@@ -22,6 +22,7 @@
 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 'use strict';
+import 'babel-polyfill';
 
 import React from 'react';
 import ReactDOM from 'react-dom';