def append_path(sprocket, path) # :nodoc:
      path = Pathname.new(path).expand_path(root)
      sprocket.append_path(path) if path.exist?
    end
def append_path(sprocket, path) # :nodoc:
      path = Pathname.new(path).expand_path(root)
      sprocket.append_path(path) if path.exist?
    end
Appends the given +path+ to the given +sprocket+
 This makes sure the path is relative to the `root` path
 or an absolute path pointing somewhere else. It also
 checks if it exists before appending it.