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

https://greenkeeper.io/

package.json

@@ -35,7 +35,7 @@
     "assume": "~1.4.1",
     "istanbul": "~0.4.5",
     "mocha": "~3.2.0",
-    "pre-commit": "~1.2.0",
+    "pre-commit": "~1.2.2",
     "request": "~2.79.0",
     "spdy": "~3.4.4"
   }