make components exportable

[allanice001]

It would be useful if the components were exported
it would allow a consumer to do something like this:

var sio sysinfo.OS
sio.GetOSInfo()

[allanice001]

sample public function to acieve this funcionality:

func GetOSInfo() {
	var si SysInfo
	si.GetSysInfo()
	data, err := json.MarshalIndent(&si.OS, "", "  ")
	if err != nil {
		log.Fatal(err)
	}
	fmt.Println(string(data))
}