chore(package): update flow-bin to version 0.47.0 (#881)

Author: greenkeeper[bot]

package.json

@@ -73,7 +73,7 @@
     "eslint": "3.19.0",
     "eslint-plugin-babel": "4.1.1",
     "eslint-plugin-flowtype": "2.33.0",
-    "flow-bin": "0.46.0",
+    "flow-bin": "0.47.0",
     "isparta": "4.0.0",
     "mocha": "3.4.2",
     "sane": "1.7.0"