chore(package): update standard to version 12.0.0

Closes #33

Author: greenkeeper[bot]

package.json

@@ -30,7 +30,7 @@
     "karma-webpack": "^2.0.3",
     "phantomjs": "^2.1.7",
     "serve": "^9.0.0",
-    "standard": "^10.0.2",
+    "standard": "^12.0.0",
     "webpack": "^3.3.0"
   },
   "scripts": {