chore(package): update standard to version 12.0.1

Closes #33

Author: greenkeeper[bot]

package.json

@@ -11,7 +11,7 @@
     "ava": "^0.21.0",
     "coveralls": "2.x",
     "nyc": "^11.0.3",
-    "standard": "^10.0.2",
+    "standard": "^12.0.1",
     "webpack": "^3.0.0"
   },
   "engines": {