added RndPoral func to create Random Portal code

nmslib_test.go

@@ -5,6 +5,11 @@ import (
 	"testing"
 )
 
+func TestRndPortal(t *testing.T) {
+	fmt.Printf("\nRandom Portal Code: ")
+	fmt.Println(RndPortal())
+}
+
 func TestPortal2Galactic(t *testing.T) {
 	want, err := P2gc("006afa556c30")
 	if err != nil {
@@ -51,7 +56,7 @@ func TestGalactic2portal(t *testing.T) {
 
 func TestCreateBanner(t *testing.T) {
 	fmt.Printf("\nTesting CreateBanner: ")
-	CreateBanner("006afa556c30", "/tmp/Test.png", 0)
+	CreateBanner(RndPortal(), "/tmp/Test.png", 0)
 }
 
 func TestTranslate(t *testing.T) {