usermanagment.go
func (c *Client) CreateUser(usr User) (*User, error) {
	url := umUsers() + `?depth=` + c.client.depth + `&pretty=` + strconv.FormatBool(c.client.pretty)
	ret := &User{}
	err := c.client.Post(url, usr, ret, http.StatusAccepted)
	return ret, err
}
func (c *Client) CreateUser(usr User) (*User, error) {
	url := umUsers() + `?depth=` + c.client.depth + `&pretty=` + strconv.FormatBool(c.client.pretty)
	ret := &User{}
	err := c.client.Post(url, usr, ret, http.StatusAccepted)
	return ret, err
}
//CreateUser creates a user