chore(package): update eslint-plugin-prettier to version 3.1.0

Closes #16

Author: greenkeeper[bot]

package.json

@@ -52,7 +52,7 @@
     "eslint-config-airbnb-base": "^12.1.0",
     "eslint-config-prettier": "^2.3.0",
     "eslint-plugin-import": "^2.7.0",
-    "eslint-plugin-prettier": "^2.1.2",
+    "eslint-plugin-prettier": "^3.1.0",
     "graphql": "^0.11.7",
     "graphql-tools": "^2.5.1",
     "husky": "^0.14.3",