Merge pull request #12 from davidchase/greenkeeper-rollup-plugin-buble-0.13.0

Update rollup-plugin-buble to version 0.13.0 🚀

Author: davidchase

package.json

@@ -24,7 +24,7 @@
   },
   "devDependencies": {
     "rollup": "0.34.8",
-    "rollup-plugin-buble": "0.12.1",
+    "rollup-plugin-buble": "0.13.0",
     "uglifyjs": "2.4.10"
   }
 }