I'd have to look at the HTML spec, but I believe that the `title` element cannot be empty.

I realize the intention of flutie is to have a reasonable default and assume that the user would override the default, but it seems weird to generate invalid html by default.

That was part of the motivation of the previous impl using the Rails app name (which, granted, is usually not a good page title, but was the least bad thing I could think of).