I'm working with a project that uses twitter-bootstrap-rails. This project was built on a Linux box, and used therubyracer as a javascript runtime. I've been running into issues because therubyracer doesn't seem to get along with Windows. therubyracer gem on windows Right now I'm trying to "bundle update"; "therubyracer" is choking things up. I think I should be able to lean on JScript. How do I t