gconfig.go
func (c GConfig) GetFloat(key string) float64 {
	v, _ := strconv.ParseFloat(c.getStringValue(key), 32)
	return v
}
func (c GConfig) GetFloat(key string) float64 {
	v, _ := strconv.ParseFloat(c.getStringValue(key), 32)
	return v
}
// GetFloat returns float value for the given key