Use `File.expand_path` instead of `File.join`
@carlosantoniodasilva I'm curious, why was this change made? Is it preferable to use File.expand_path instead of File.join if the first param is File.dirname(__FILE__)? If so, there are a lot of other places where this change is needed, I could write the PR for that.
@ptn It's just that it's shorter and reads better this way, and since the WelcomeController with a default root action for dev was added with that, it was asked to change this one as well. I think we can change as we go, not sure there's a need to change everywhere :). Thanks!