chore(package): update prettier to version 2.0.1

Closes #18

Author: greenkeeper[bot]

package.json

@@ -32,7 +32,7 @@
     "lint-staged": "^7.2.2",
     "nsp": "^3.2.1",
     "nvx": "^1.0.2",
-    "prettier": "^1.14.2",
+    "prettier": "^2.0.1",
     "prettier-package-json": "^2.0.0"
   },
   "keywords": [