fix(package): update prettier to version 2.0.2

Closes #33

Author: greenkeeper[bot]

package.json

@@ -35,7 +35,7 @@
     "jade": "~1.11.0",
     "morgan": "~1.9.0",
     "mysql2": "^1.6.1",
-    "prettier": "^1.14.2",
+    "prettier": "^2.0.2",
     "pretty-quick": "^1.6.0",
     "sequelize": "^4.38.0",
     "superagent": "3.8.3",