chore(package): update nodemon to version 2.0.4

Closes #36

Author: greenkeeper[bot]

package.json

@@ -23,7 +23,7 @@
     "axios": "^0.18.0",
     "chai": "^4.2.0",
     "mocha": "^5.2.0",
-    "nodemon": "^1.18.7",
+    "nodemon": "^2.0.4",
     "morgan": "^1.9.1"
   },
   "dependencies": {