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

https://greenkeeper.io/

package.json

@@ -42,6 +42,6 @@
     "assume": "1.4.x",
     "istanbul": "0.4.x",
     "mocha": "~3.2.0",
-    "pre-commit": "~1.2.0"
+    "pre-commit": "~1.2.2"
   }
 }