Update Readme

Author: Bun133

README.md

@@ -8,35 +8,78 @@ new Display("title",%BufferSize%,%OnDisplayRect%)
 ```
 BufferSize is 2 is Double Buffer. 3 is Triple Buffer.
 OnDisplayRect will decide Window Pos and Size
+### Layer
+layer allows you easy operation.
 
+e.g. for get Layer from Display LayerManager
+```Java
+Display.layerManager.get("%String id%")
+Diaplay.layerManager.get(%Frame Layer Num%)
+```
 ### Drawable
 ```Java
-new Drawable("test",new Pos(10,40),"for_id")
+new Drawable(new IDrawable(%SomeThing%))
+```
+
+and Drawable register to Display Layer.
+```Java
+Layer.addDrawable(Drawable)
 ```
-Default Drawable supported Image,String.
 
-and Drawable register to Display,
+### SyncedDrawable
+If You Want to Changed State of Drawable,It's not hard.
+
 ```Java
-Display.addDrawable(drawable)
+new Drawable(new Synced...())
 ```
 
-**if You Changed state,you must register now!**
+IDrawable which is name starts with "Synced",It Supports dynamic Value Changing.
+
+e.g. SyncedStringDrawable
+
+```Java
+SyncedStringDrawable s_d=new SyncedStringDrawable("Before Change",new Rect(100,100,200,200),"id");
+display.layerManager.get("default").add(new Drawable(s_d));
+s_d.setText("After Change");
+while(true){
+if (display.limiter.onUpdate()) display.update();
+}
+```
 
+It will draw "After Change",(Because It was Changed!)
 
 #### CustomDrawable
 if you want make CutomDrawable,
-you must implement ICustomDrawable
+you must implement IDrawable
 ```Java
-public class test_cutom_Drawable implments ICustomDrawable{
-@Override
+public class test_cutom_Drawable implments IDrawable{
+    @Override
     public void onDraw(Graphics g, Rect rect) {
       //To SomeThing draw.
     }
+    
+    @Override
+    public Rect getShowingRect(){
+        //Retrun border of Showing Content
+    }
+    
+    @Override
+    public boolean isShowing(Display display){
+        //returns Is this showing.
+        //Usually Use Display.isShowing(Rect rect)
+        return display.isShowing(getShowingRect());
+    }
+    
+    @Override
+    public String getID(){
+        return "Drawable ID";
+    }
 } 
 ```
+
 and Use this for
 ```Java
-new Drawable(new test_custom_Drawable(),new Pos(),"id")
+layer.addDrawable(new test_custom_drawable());
 ```
 
 You can add own Drawable!
@@ -53,22 +96,38 @@ new GUIBase("test",new Pos(),"id")
 
 and register,
 ```Java
-Display.addGUI(Gui)
+Display.addDrawable(new Drawable(GUIBase))
 ```
-**if You Changed state,you must register now!**
 
 #### CustomGUI
 if you want make CutomGUI,
-you must implement ICustomGUI
+you must implement IDrawable.
+
 ```Java
-public class test_cutom_GUI implments ICustomGUI{
+public class test_cutom_GUI implments IDrawable{
 @Override
     public void onDraw(Graphics g, Rect rect) {
       //To SomeThing draw.
     }
+    
+    @Override
+    public Rect getShowingRect(){
+        //Retrun border of Showing Content
+    }
+    
+    @Override
+    public boolean isShowing(Display display){
+        //It is GUI,so We always draw it.
+        return true;
+    }
+    
+    @Override
+    public String getID(){
+        return "GUI ID";
+    }
 } 
 ```
 and Use this for
 ```Java
-new GUIBase(new test_custom_GUI(),new Pos(),"id")
+new Drawable(new test_custom_GUI())
 ```