chore(package): update nodemon to version 2.0.3

Closes #6

Author: greenkeeper[bot]

package.json

@@ -33,6 +33,6 @@
   },
   "devDependencies": {
     "node-dev": "^3.1.3",
-    "nodemon": "^1.18.3"
+    "nodemon": "^2.0.3"
   }
 }