Update flow-bin to the latest version 🚀 (#9)

* chore(package): update flow-bin to version 0.70.0

* chore(package): update lockfile

https://npm.im/greenkeeper-lockfile

package.json

@@ -48,7 +48,7 @@
     "eslint-plugin-import": "^2.8.0",
     "eslint-plugin-prettier": "^2.6.0",
     "fetch-mock": "^6.0.0",
-    "flow-bin": "^0.69.0",
+    "flow-bin": "^0.70.0",
     "jest": "22.4.3",
     "mongodb-memory-server": "^1.6.5",
     "nodemon": "^1.15.1",

yarn.lock

@@ -2384,9 +2384,9 @@ flat-cache@^1.2.1:
     graceful-fs "^4.1.2"
     write "^0.2.1"
 
-flow-bin@^0.69.0:
-  version "0.69.0"
-  resolved "https://registry.yarnpkg.com/flow-bin/-/flow-bin-0.69.0.tgz#053159a684a6051fcbf0b71a2eb19a9679082da6"
+flow-bin@^0.70.0:
+  version "0.70.0"
+  resolved "https://registry.yarnpkg.com/flow-bin/-/flow-bin-0.70.0.tgz#080ae83a997f2b4ddb3dc2649bf13336825292b5"
 
 for-in@^1.0.1, for-in@^1.0.2:
   version "1.0.2"