chore(package): update standard to version 11.0.0

Closes #12

Author: greenkeeper[bot]

package.json

@@ -12,7 +12,7 @@
     "os-homedir": "^1.0.1"
   },
   "devDependencies": {
-    "standard": "^8.0.0",
+    "standard": "^11.0.0",
     "semantic-release": "^6.3.2",
     "greenkeeper-postpublish": "^1.0.0"
   },