Merge pull request #333 from graphql/greenkeeper/flow-bin-0.49.1

Update flow-bin to the latest version 🚀

Author: wincent

package.json

@@ -85,7 +85,7 @@
     "eslint-plugin-flowtype": "2.34.0",
     "express": "4.14.1",
     "express3": "*",
-    "flow-bin": "0.48.0",
+    "flow-bin": "0.49.1",
     "graphql": "0.10.0",
     "isparta": "4.0.0",
     "mocha": "3.4.2",