func GetRef(ref string) (oid string, err error) {
	path := UGIT_DIR + "/" + ref
	d, err := ioutil.ReadFile(path)
	return string(d), err
}
/*
GetRef return the oid stored by the reference's file
*/
GetRef return the oid stored by the reference's file
/ * GetRef return the oid stored by the reference ' s file * /
func GetRef(ref string) (oid string, err error) {
	path := UGIT_DIR + "/" + ref
	d, err := ioutil.ReadFile(path)
	return string(d), err
}
func GetRef ( ref string ) ( oid string , err error ) { path := UGIT_DIR + " " + ref d , err := ioutil . ReadFile ( path ) return string ( d ) , err }
GetRef return the oid stored by the reference's file
GetRef return the oid stored by the reference ' s file