Merge pull request #27 from NodeOS/greenkeeper-prebuild-6.0.0

Update prebuild to version 6.0.0 🚀

Author: piranna

package.json

@@ -55,7 +55,7 @@
     "prebuild-install": "2.1.0"
   },
   "devDependencies": {
-    "prebuild": "^5.0.3"
+    "prebuild": "^6.0.0"
   },
   "main": "index.js",
   "repository": {