def relative_path_from(start, dest)
      start, dest = Pathname.new(start), Pathname.new(dest)
      start = start.dirname unless start.directory?
      dest.relative_path_from(start).to_s
    end
def relative_path_from(start, dest)
      start, dest = Pathname.new(start), Pathname.new(dest)
      start = start.dirname unless start.directory?
      dest.relative_path_from(start).to_s
    end
Public: Get relative path from `start` to `dest`.

 start - String start path (file or dir)
 dest  - String destination path

 Returns relative String path from `start` to `dest`