chore(package): update standard to version 8.0.0

https://greenkeeper.io/

Author: greenkeeperio-bot

package.json

@@ -32,7 +32,7 @@
     "karma-phantomjs-launcher": "^1.0.0",
     "mocha": "^3.0.1",
     "phantomjs-prebuilt": "^2.1.7",
-    "standard": "^7.1.2",
+    "standard": "^8.0.0",
     "watchify": "^3.7.0"
   },
   "scripts": {