There are different references in the document you posted and I’m not sure which project you are talking about.
Even though, you can find a lot of examples in the XDK IDE.
In the section for NodeJS projects:
Digital Read and Digital Write
LCD with Blacklight
Onboard LED Blink
IoT Devkit v1
Simple Web Server
In the section for HTML5 projects:
You can also find some games with their respective source files in the IDE.
Take a look at them and let me know if they are useful for you, if they are not what you are looking for, please let me know what do you want to develop and regarding the PDF you posted the pages with the example you want.
Now, I also saw this link Programming the Internet of Things with Node.js and HTML5: Hardware, Software & the Internet of Things, O'Reilly Solid, … where Michael McCool suggests to email him for the code of the course; you can also try this.
unfortunately the link you've provided comes back as not available: http://https//software.intel.com/en-us/getting-started-with-the-intel-xdk-iot-edition
I'm looking for any project that involves node.js, web sockets, mqtt and HTML5 and the project I was referring to contains it all. I don't have any specific project in mind currently, I just want to learn node.js + web sockets.
Try with this link: IoT - Intel® XDK IoT Edition User Guide | Intel® Developer Zone
Also, I found some other examples on the Internet that may be helpful for you: