Add the package hubot-robowhois as dependencies in your Hubot package.json file.
"dependencies": {
"hubot-robowhois": ">= 0"
}
Run the following command to make sure those packages is installed.
$ npm install hubot-robowhois
To enable the script, add the hubot-robowhois entry to the external-scripts.json file (you may need to create this file, if it is not present or if you upgraded from Hubot < 2.4).
["hubot-robowhois"]