Greenkeeper/uglify js 3.3.2 (#34)

* chore(package): update uglify-js to version 3.3.2

Closes #33

* chore(package): update lockfile

https://npm.im/greenkeeper-lockfile

Author: GitSquared

package-lock.json

@@ -87,6 +87,6 @@
     "electron-rebuild": "1.6.0",
     "minifier": "0.8.1",
     "node-json-minify": "1.0.0",
-    "uglify-js": "3.3.0"
+    "uglify-js": "3.3.2"
   }
 }