Merge pull request #24 from asset-pipe/greenkeeper-babel-preset-es2015-6.24.0

Update babel-preset-es2015 to version 6.24.0 🚀

Author: trygve-lie

package.json

@@ -32,7 +32,7 @@
     "watchify": "3.9.0"
   },
   "devDependencies": {
-    "babel-preset-es2015": "6.22.0",
+    "babel-preset-es2015": "6.24.0",
     "babelify": "7.3.0",
     "eslint": "^3.15.0",
     "eslint-config-finn": "^1.0.1",