add the enum variants

exercises/enums/enums2.rs

@@ -6,6 +6,10 @@
 #[derive(Debug)]
 enum Message {
     // TODO: define the different variants used below
+	Move,
+	Echo,
+	ChangeColor,
+	Quit,
 }
 
 impl Message {
@@ -17,7 +21,7 @@ impl Message {
 fn main() {
     let messages = [
         Message::Move { x: 10, y: 30 },
-        Message::Echo(String::from("hello world")),
+		Message::Echo(String::from("hello world")),
         Message::ChangeColor(200, 255, 255),
         Message::Quit,
     ];