chore(package): update gulp-babel to version 6.1.2

http://greenkeeper.io/

package.json

@@ -35,7 +35,7 @@
     "eslint-plugin-new-with-error": "^1.1.0",
     "eslint-plugin-no-use-extend-native": "^0.3.1",
     "gulp": "^3.9.0",
-    "gulp-babel": "^6.0.0",
+    "gulp-babel": "^6.1.2",
     "gulp-eslint": "^1.0.0",
     "gulp-istanbul": "^0.10.0",
     "gulp-jscs": "^3.0.1",