Updated README

README

@@ -3,44 +3,24 @@ in managed code. Maigre takes care of implementing the GtkRcStyle, GtkStyle,
 and theme module entry points, leaving the theme author to only have to worry
 about rendering code.
 
-Rendering functions (draw_*) that typically are overridden in GtkStyle are
-simply defined in a well-named static class (Maigre.Theme). All methods are
-optional. In addition to Draw functions, this class may optionally implement
-ModuleInit and ModuleExit functions.
-
 An example:
 
 using System;
-using Gtk;
-using Cairo;
 
-namespace Maigre
+public class MyTheme : Maigre.Theme
 {
-    public static class Theme
+    protected override void ModuleInit ()
     {
-        public static void ModuleInit ()
-        {
-        }
+    }
 
-        public static void ModuleExit ()
-        {
-        }
-
-        public static void DrawBox (Gtk.Style style, Gdk.Window window,
-            StateType state_type, ShadowType shadow_type, Gdk.Rectangle area,
-            Widget widget, string detail, int x, int y, int width, int height)
-        {
-            var cr = Gdk.CairoHelper.Create (widget.GdkWindow);
-            switch (detail) {
-                case "hscrollbar":
-                case "vscrollbar": cr.Color = new Cairo.Color (1, 0, 0); break;
-                case "slider":" cr.Color = new Cairo.Color (0, 0, 1); break;
-                case "trough": cr.Color = new Cairo.Color (0, 1, 0); break;
-                default: cr.Color = new Cairo.Color (1, 0, 1); break;
-            }
-            cr.Rectangle (x, y, width, height);
-            cr.Fill ();
-            ((IDisposable)cr).Dispose ();
+    protected override void DrawBox ()
+    {
+        switch (Detail) {
+            case "button":
+                Cr.Rectangle (0, 0, Width, Height);
+                Cr.Color = new Cairo.Color (0, 0, 0);
+                Cr.Fill ();
+                break;
         }
     }
 }