def put_string(path, str)
      path = @uri.merge(path).path
      res = @handler.request_sending_body(:put, path, str, @headers)
      res.body
    end
def put_string(path, str)
      path = @uri.merge(path).path
      res = @handler.request_sending_body(:put, path, str, @headers)
      res.body
    end
Stores the content of a string to a URL

 Example:
   dav.put(url.path, "hello world")