chore(package): update prettier to version 2.0.2

Closes #9

Author: greenkeeper[bot]

package.json

@@ -35,7 +35,7 @@
     "jest": "^24.8.0",
     "lec": "^1.0.1",
     "lint-staged": "^9.1.0",
-    "prettier": "^1.15.2",
+    "prettier": "^2.0.2",
     "prettier-package-json": "^2.1.0"
   },
   "keywords": [