chore(package): update pre-commit to version 1.2.2

https://greenkeeper.io/

package.json

@@ -36,7 +36,7 @@
     "binary-pack": "~1.0.2",
     "istanbul": "~0.4.5",
     "mocha": "~3.2.0",
-    "pre-commit": "~1.2.0",
+    "pre-commit": "~1.2.2",
     "primus": "~6.0.5",
     "ws": "~1.1.1"
   }