chore(package): update ghooks to version 2.0.4

Closes #12

Author: greenkeeper[bot]

package.json

@@ -36,7 +36,7 @@
     "commitizen": "2.9.6",
     "conventional-changelog-core": "^1.5.0",
     "coveralls": "^3.0.0",
-    "ghooks": "1.3.2",
+    "ghooks": "2.0.4",
     "git-dummy-commit": "^1.3.0",
     "greenkeeper-postpublish": "1.1.0",
     "istanbul": "^0.4.5",