chore(package): update prettier to version 2.0.1

Closes #68

Author: greenkeeper[bot]

package.json

@@ -42,7 +42,7 @@
     "node-sass": "^4.12.0",
     "offline-plugin": "^5.0.7",
     "pre-commit": "^1.2.2",
-    "prettier": "1.18.2",
+    "prettier": "2.0.1",
     "resolve-url-loader": "^3.1.0",
     "sass": "^1.22.3",
     "sass-loader": "^7.1.0",