I like for using Bower with Rails to be as simple as running bower install -S package and including it from my asset file. It takes a couple configuration steps to get to that point.
Set a non-standard directory for bower_components by creating a .bowerrc file and adding a directory option.
Add the new directory to the auto-load path by updating initializers/assets.rb.
For an added convinience I like to rails generate task bower and add a couple tasks. This provides shortcuts and tasks that are useful in deployments.
You can bowerify your project right now with this shell script.
curl http://bit.ly/bowerify | bash