chore(package): update prettier to version 2.0.2

Closes #52

Author: greenkeeper[bot]

package.json

@@ -52,7 +52,7 @@
     "husky": "^1.0.0-rc.14",
     "jest": "^23.6.0",
     "lint-staged": "^8.0.0",
-    "prettier": "^1.14.2",
+    "prettier": "^2.0.2",
     "raf": "^3.4.0",
     "react": "^16.1.1",
     "react-dom": "^16.1.1",