chore(package): update babel-cli to version 6.11.4

https://greenkeeper.io/

Author: greenkeeperio-bot

package.json

@@ -31,7 +31,7 @@
   "license": "MIT",
   "dependencies": {},
   "devDependencies": {
-    "babel-cli": "^6.8.0",
+    "babel-cli": "^6.11.4",
     "babel-core": "^6.7.7",
     "babel-preset-es2015": "^6.6.0",
     "babel-register": "^6.7.2",