Merge pull request #5 from PolkaJS/greenkeeper/flow-bin-0.53.0

Update flow-bin to the latest version 🚀

Author: CraigglesO

package.json

@@ -20,7 +20,7 @@
     "babel-eslint": "^7.2.3",
     "babel-preset-flow": "^6.23.0",
     "eslint": "^4.0.0",
-    "flow-bin": "^0.52.0",
+    "flow-bin": "^0.53.0",
     "tape": "^4.6.3"
   }
 }