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As before, the quickest way to get Bootstrap is by going to the getbootstrap.com website and clicking on this download Bootstrap link. You can also go to the GitHub project by clicking on this link, and if you go to Getting Started, you can see a few more options. If you're into package managers, you can install Bootstrap with a single command using Bower. Now, you can also simply call the files from NetDNA's CDN, or content delivery network. This should let you use Bootstrap without having to install or download any files into your local directories. The theory behind CDN's is that browsers cache CDN files so that if a user comes from a site that uses these links they won't have to be reloaded for your site. CDN files do not work without a net connection so they don't make for the best development environments.
Now the directory structures are pretty similar to what you got with Bootstrap 2 except that, of course, there are no responsive files since everything is responsive in Bootstrap 3. Plus, there are no PNG files for icons. All icons are now drawn from font files, and so, instead of an Image folder, you have a Fonts folder. The fonts will draw perfectly regardless of the device, so this makes your icons display perfectly on retina and high-resolution displays. Now if you look at the default template for Bootstrap, it's much simpler in Bootstrap 3.
You pretty much add a viewport tag to your document, and you still have to add jQuery, which you can get from this website. Now optionally, if you want to responsive features to IE8, you can call a respond.js file which you'll need to get from this website. So there's a few additional options for getting and installing Bootstrap. A lot of advanced developers enjoy using a workflow tool like Bower to install frameworks, so it's nice to see that it's documented in this version. I also like the option of adding a CDN. Sometimes it's the quickest way to start a project without having to download or install anything on your local machine.
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