title: Upgrading cakephp 2.x to 3.x
body: <p>I'm trying to upgrade several of our cakephp 2 apps to cakephp 3 using the <a href="https://book.cakephp.org/3.0/en/upgrade-tool.html" rel="nofollow noreferrer">upgrade tool</a> but I'm a little lost. On this <a href="http://mark-story.com/posts/view/upgrading-to-cakephp-3-0" rel="nofollow noreferrer">blog</a>, in one of the comments it says that my application will need a copy of cakephp 3 for the upgrade. Do I install it in the root directory of my app or where exactly?</p>
  
  <p>Should the commands be run like this</p>
  
  <pre><code>bin/cake upgrade all /root_directory/
  </code></pre>
  
  <p>or</p>
  
  <pre><code>bin/cake upgrade all /root_directory/app/
  </code></pre>
  
  <p>Any help is appreciated.</p>