macaron.go
func SetConfig(source interface{}, others ...interface{}) (_ *ini.File, err error) {
	cfg, err = ini.Load(source, others...)
	return Config(), err
}
func SetConfig(source interface{}, others ...interface{}) (_ *ini.File, err error) {
	cfg, err = ini.Load(source, others...)
	return Config(), err
}
// SetConfig sets data sources for configuration.