I know that current Play! distribution has a helper for Bootstrap 1.4. What should I do if I want to use the current version of Bootstrap?
I'll throw in, to use Glyphicons with Bootstrap 2.2.2 and Play 2.0.4 I couldn't quite use the routes that adis posted above. I moved the two glyphicons files into the 'images' folder (the Play default, not 'img' which is the Bootstrap default) and added to my routes:
# Map Bootstrap images
GET /assets/img/glyphicons-halflings.png controllers.Assets.at(path="/public", file="/images/glyphicons-halflings.png")
GET /assets/img/glyphicons-halflings-white.png controllers.Assets.at(path="/public", file="/images/glyphicons-halflings-white.png")
and this let me access the glyphicons like a normal bootstrap install, no messing with 'less' files etc