code: func (c *Client) PushLink(iden, title, u, body string) error {
  	data := Link{
  		Iden:  iden,
  		Type:  "link",
  		Title: title,
  		URL:   u,
  		Body:  body,
  	}
  	return c.Push("/pushes", data)
  }
docs: // PushLink pushes a link with a title and url to a specific PushBullet device.