Merge pull request #686 from graphql/greenkeeper/babel-cli-6.22.2

chore(package): update babel-cli to version 6.22.2

Author: wincent

package.json

@@ -39,7 +39,7 @@
     "iterall": "1.0.3"
   },
   "devDependencies": {
-    "babel-cli": "6.18.0",
+    "babel-cli": "6.22.2",
     "babel-eslint": "7.1.1",
     "babel-plugin-check-es2015-constants": "6.22.0",
     "babel-plugin-syntax-async-functions": "6.13.0",