chore(package): update lodash to version 4.13.1

https://greenkeeper.io/

Author: greenkeeperio-bot

package.json

@@ -53,7 +53,7 @@
     "webpack": "1.13.1"
   },
   "dependencies": {
-    "lodash": "4.6.0",
+    "lodash": "4.13.1",
     "react": "0.14.7",
     "react-addons-test-utils": "15.1.0",
     "sinon": "1.17.4",