chore(package): update prettier to version 2.0.2

Closes #83

Author: greenkeeper[bot]

package.json

@@ -69,7 +69,7 @@
     "husky": "^0.14.3",
     "jest": "^21.2.1",
     "nodemon": "^1.11.0",
-    "prettier": "^1.5.3",
+    "prettier": "^2.0.2",
     "semantic-release": "^8.0.3",
     "supertest": "^3.0.0"
   },