chore(package): update standard to version 13.0.2

Closes #80

Author: greenkeeper[bot]

package.json

@@ -50,7 +50,7 @@
     "safari-launcher": "^2.0.5",
     "semantic-release": "^6.3.2",
     "serve": "^6.0.2",
-    "standard": "^10.0.1",
+    "standard": "^13.0.2",
     "uglify-js": "^3.0.23"
   },
   "config": {