Moved enum into structs and renamed section to structs and enums

vala.html.markdown

@@ -215,7 +215,7 @@ namespace_int += 5; // Won't compile
 using NamespaceDemo;
 namespace_int += 5; // Valid
 
-/* Structs */
+/* Structs and Enums */
 
 struct Closet {
   public uint shirts; // Default access modifier is private
@@ -229,6 +229,13 @@ var struct_init_3 = Closet() { // Type inference also works
   jackets = 3;
 }
 
+enum HouseSize { // An example of an enum
+  SMALL,
+  MODERATE,
+  BIG
+}
+
+
 /* Classes and Object-Oriented Programming */
 
 class Message : GLib.Object { // Class Message extends GLib's Object
@@ -271,12 +278,6 @@ public class Calculator : GLib.Object {
 var calc1 = new Calculator.with_name("Temp");
 var calc2 = new Calculator.model("TI-84");
 
-enum HouseSize {
-  SMALL,
-  MODERATE,
-  BIG
-}
-
 ```
 
 * Read about building GUIs with GTK+ and Vala [here](http://archive.is/7C7bw).