chore(package): update eslint-plugin-github to version 0.8.0

https://greenkeeper.io/

Author: greenkeeperio-bot

package.json

@@ -32,7 +32,7 @@
   },
   "devDependencies": {
     "eslint": "^3.3.1",
-    "eslint-plugin-github": "^0.6.1",
+    "eslint-plugin-github": "^0.8.0",
     "stylelint-test-rule-tape": "^0.2.0"
   }
 }