Here you can find the download project files as well as links to the Base framework and other useful tools
You can get chapter specific code from the chapters pages on the site, however if you would like to grab the master zip file you can get it from the link below.
Base is a responsive template that is suitable for starting multiple projects
Download from the GitHub project page
Caliper is a plugin that you can use to determine various widths and sizes.
Download Caliper from the GitHub project page
Pixity is a plugin that was created to help ease the burder of using different images based on device screen size.
Download Pixity Core from the GitHub project page