chore(package): update prettier to version 1.7.2

Author: greenkeeper[bot]

package.json

@@ -41,7 +41,7 @@
     "eslint-plugin-standard": "^3.0.1",
     "husky": "^0.14.3",
     "nyc": "^11.1.0",
-    "prettier": "^1.5.3",
+    "prettier": "^1.7.2",
     "rimraf": "^2.6.1",
     "semantic-release": "^8.0.0",
     "tempy": "^0.2.0"