chore(package): update husky to version 0.13.3 (vercel#144)

https://greenkeeper.io/

Author: greenkeeper[bot]

package.json

@@ -44,7 +44,7 @@
   },
   "homepage": "https://github.com/zeit/serve#readme",
   "devDependencies": {
-    "husky": "0.13.3-0",
+    "husky": "0.13.3",
     "xo": "0.18.0"
   },
   "dependencies": {