Let me share some quick thoughts and trade offs.<p>I did:<p>(1) Cloned bootstrap into the Rails.root/lib/assets directory, setup config.assets.path, added the require lines to my css and js files.<p>Alternatively I could have done:<p>(2) Used one of the gems mentioned in the comments, added the require lines to my css and js files.<p>In 2.0, there's some manual work involved to get the js pointing to the correct image path, but assuming you've made it that far, those changes are pretty simple to automatically regex.<p>IMO, the biggest difference is the way you go about styling markup. In (1), markup is modified intrusively. The example from the OP can be tolerated. But now imagine if <i>all</i> your divs had a .row or .spanxx classes attached. If that's unacceptable for you, I'd find a gem that you can work with.<p>I was tracking 2.0-wip for a couple of months and it wasn't easy to stay up to date with all the changes. Hopefully it's getting easier for gem authors to track and update