markbates/coffee-rails-source-maps — pull request #8 by brentd (2013-03-29 03:20:32+00:00)
Title: Update README with instructions to delete tmp/cache/assets

I found the most effective way to get Sprockets to recompile all your JS and thus generate source maps was to nuke `tmp/cache/assets`. I updated the README to note this.

Thanks for the gem!