code: func ParseRate(resp *http.Response) *RateLimit {
  	limit := resp.Header.Get(headerRateLimit)
  	path := resp.Header.Get(headerRatePath)
  	remain := resp.Header.Get(headerRateRemaining)
  
  	l, _ := strconv.Atoi(limit)
  	r, _ := strconv.Atoi(remain)
  
  	return &RateLimit{
  		Limit:     l,
  		Path:      path,
  		Remaining: r,
  	}
  }
docs: // ParseRate is a helper function to get all the Rate info