title: What's the difference between a Hubot Package and a Hubot Script?
body: <p>I'm using Hubot with Slack and I have already successfully integrated quite a few different NPM packages with it.</p>
  
  <p>I'm considering developing some new functionalities but I'm not sure how to proceed.</p>
  
  <p>How do I determine if what I need to do is properly accomplished by a Script? Or, when to use an NPM Package?</p>