Write username and password prompt to stderr

README.md

@@ -8,4 +8,3 @@ or LSF Served Fabulously
 - tests
 - webapi
 - wrap errors correctly. run cmd/lsf without an internet connection and get inspired by the standard libary
-- username/password prompt stderr

cmd/lsf/main.go

@@ -74,7 +74,7 @@ func sessionNeeded() {
 
 func readUsername() (string, error) {
 	var username string
-	fmt.Print("Username: ")
+	fmt.Fprint(os.Stderr, "Username: ")
 	_, err := fmt.Scanf("%s", &username)
 	if err != nil {
 		return "", errors.Wrap(err, "could not read username")
@@ -84,12 +84,12 @@ func readUsername() (string, error) {
 
 func readPassword() (string, error) {
 	var password string
-	fmt.Print("Password: ")
+	fmt.Fprint(os.Stderr, "Password: ")
 	b, err := terminal.ReadPassword(int(syscall.Stdin))
 	if err != nil {
 		return "", err
 	}
-	fmt.Print("\n")
+	fmt.Fprint(os.Stderr, "\n")
 	password = string(b)
 	return password, nil
 }