Client does not handle API rate limits

[f1gjam]

After degbugging why suddenly some times getting commit data would fail. I realised I must be hitting the rate limite. I needed to debug

func (c *Client) doPaginatedRequest(req *http.Request, page *int, emptyResponse bool) (interface{}, error) {

to find that I was actually hitting the rate limit. It would be good to handle the api rate limit or at least pass back this information so that the end developer can manage the rate limit themselves.