Add new syntax for giving votes

bot.go

 	if stars.MatchString(score) {
 		return fmt.Sprintf("%d", len(score))
 	}
-	imageStars, _ := regexp.Compile("^(\\[\\[Image:[01]\\.png\\]\\]){5}$")
+	imageStars, _ := regexp.Compile("^(\\[\\[Image:[01]\\.png\\]\\]){1,5}$")
 	if imageStars.MatchString(score) {
 		return fmt.Sprintf("%d", strings.Count(score, "1"))
 	}

bot_test.go

 	if s != "3" {
 		t.Fail()
 	}
-
+	s = parseScore("[[Image:1.png]][[Image:1.png]]")
+	if s != "2" {
+		t.Fail()
+	}
 	s = parseScore("{{Rating|3|5}}")
 	if s != "3" {
 		t.Fail()