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

Author: greenkeeper[bot]

package.json

@@ -78,7 +78,7 @@
     "enzyme-to-json": "^3.3.1",
     "eslint": "^4.17.0",
     "eslint-config-insilico": "^5.1.0",
-    "flow-bin": "^0.69.0",
+    "flow-bin": "^0.70.0",
     "flow-copy-source": "^1.2.2",
     "husky": "^0.14.3",
     "intersection-observer": "^0.5.0",