chore(package): update nodemon to version 2.0.3

Closes #38

Author: greenkeeper[bot]

package.json

@@ -74,7 +74,7 @@
     "coveralls": "^3.0.0",
     "cross-env": "^5.0.0",
     "jest": "^21.0.0",
-    "nodemon": "^1.9.0",
+    "nodemon": "^2.0.3",
     "npm-run-all": "^4.0.1",
     "onchange": "^3.0.2",
     "react": "^15.6.1",