chore(package): update babel-preset-es2015-node6 to version 0.3.0

https://greenkeeper.io/

Author: greenkeeperio-bot

package.json

@@ -34,7 +34,7 @@
   },
   "homepage": "https://github.com/GitScrum/slim",
   "devDependencies": {
-    "babel-preset-es2015-node6": "^0.2.0",
+    "babel-preset-es2015-node6": "^0.3.0",
     "babel-register": "^6.11.6",
     "doiuse": "^2.4.1",
     "execa": "^0.4.0",