node.js noobie trying to follow a tutorial - need to change jade reference to pug : <p>I'm trying to follow this tutorial to learn about node.js: </p>

<p><a href="http://cwbuecheler.com/web/tutorials/2014/restful-web-app-node-express-mongodb/" rel="noreferrer">http://cwbuecheler.com/web/tutorials/2014/restful-web-app-node-express-mongodb/</a></p>

<p>When I run "npm install" some of the messages I see include this:</p>

<pre><code>npm WARN deprecated jade@1.11.0: Jade has been renamed to pug, please install the latest version of pug instead of jade
npm WARN deprecated transformers@2.1.0: Deprecated, use jstransformer
</code></pre>

<p>And then it goes ahead and seems to set up the application anyways. 
My package.json file currently looks like this: </p>

<pre><code>{
  "name": "testapp",
  "version": "0.0.0",
  "private": true,
  "scripts": {
    "start": "node ./bin/www"
  },
  "dependencies": {
    "body-parser": "~1.13.2",
    "cookie-parser": "~1.3.5",
    "debug": "~2.2.0",
    "express": "~4.13.1",
    "jade": "~1.11.0",
    "morgan": "~1.6.1",
    "serve-favicon": "~2.3.0",
    "mongodb": "^1.4.4",
    "monk": "^1.0.1"
  }
}
</code></pre>

<p><strong>Questions:</strong>
(these questions apply to both packages that I got warned about, but for discussion purposes, I'm just going to pick on jade / pug)</p>

<p>If I wanted to change jade to pug, do i need to specify a version number in this package.json file?  Or can I just tell it to get latest somehow? 
Also, do I need to blow away my folder structure and then rerun the npm install command?  Or can I just edit the package.json file and retry npm install? </p>

<p>Lastly, based on your experience, how critical is it for me to change from jade to pug if i'm just trying to learn how node works?  I'm tempted to just leave as is... but then again, if this app works, i know it's going to be rolled out into production.. 
so... i guess i should make the right decisions up front. </p>

<p>Thanks and sorry if my questions are really remedial. </p>
