chore(package): update eslint-config-prettier to version 6.2.0

Closes #22

Author: greenkeeper[bot]

package.json

@@ -45,7 +45,7 @@
     "babel-cli": "6.26.0",
     "babel-preset-env": "1.7.0",
     "eslint": "^5.3.0",
-    "eslint-config-prettier": "^3.0.0",
+    "eslint-config-prettier": "^6.2.0",
     "eslint-plugin-prettier": "^2.6.2",
     "greenkeeper-lockfile": "1.15.1",
     "heroku": "^7.7.8",