chore(package): update prettier to version 2.0.5

Closes #13

Author: greenkeeper[bot]

package.json

@@ -36,7 +36,7 @@
     "browser-sync": "^2.26.7",
     "husky": "^2.4.1",
     "lint-staged": "^8.2.1",
-    "prettier": "^1.18.0",
+    "prettier": "^2.0.5",
     "ts-loader": "^6.0.4",
     "tslint": "^5.18.0",
     "typescript": "^3.5.2"