chore(package): update flow-bin to version 0.71.0

Author: greenkeeper[bot]

package.json

@@ -56,7 +56,7 @@
     "babel-preset-flow": "^6.23.0",
     "babel-runtime": "^6.26.0",
     "cross-env": "^5.1.4",
-    "flow-bin": "^0.70.0",
+    "flow-bin": "^0.71.0",
     "jest": "^22.4.3",
     "kcd-scripts": "^0.37.0",
     "prettier": "^1.12.1",