diff --git a/README.md b/README.md
index edb9257..d080b73 100644
--- a/README.md
+++ b/README.md
@@ -23,15 +23,15 @@ This is a work in progress.
 ####ALL:  
     Golang
     //Gcc
-    //zlib & libpng (bitmap)
 
 ####For Mac OS X:
+
     Xcode Command Line Tools
 
-    //brew install libpng
-    //brew install homebrew/dupes/zlib
 ####For Windows:
+
     MinGW or other GCC
+    
 ####For everything else:
     GCC
     
diff --git a/README_zh.md b/README_zh.md
index 6713fb1..8684c2a 100644
--- a/README_zh.md
+++ b/README_zh.md
@@ -24,15 +24,15 @@ RobotGo 支持 Mac, Windows, and Linux(X11).
 ####ALL:  
     Golang
     //Gcc
-    //zlib & libpng (bitmap)
 
 ####For Mac OS X:
+
     Xcode Command Line Tools
 
-    //brew install libpng
-    //brew install homebrew/dupes/zlib
 ####For Windows:
+
     MinGW or other GCC
+    
 ####For everything else(Linux等其他系统):
     GCC
     
diff --git a/bitmap/goBitmap.h b/bitmap/goBitmap.h
index 80a5787..8b13789 100644
--- a/bitmap/goBitmap.h
+++ b/bitmap/goBitmap.h
@@ -1,20 +1 @@
-// Copyright 2016 The go-vgo Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://www.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
 
-class BMP
-{
-	public:
-		size_t width;
-		size_t height;
-		size_t byteWidth;
-		uint8_t bitsPerPixel;
-		uint8_t bytesPerPixel;
-		uint8_t *image;
-};
diff --git a/robotgo.go b/robotgo.go
index 9fd3c98..d34a1f5 100644
--- a/robotgo.go
+++ b/robotgo.go
@@ -1,6 +1,8 @@
-// Copyright 2016 The go-vgo Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://www.
+// Copyright 2016 The go-vgo Project Developers.
+
+// All Rights Reserved. See the COPYRIGHT file at
+// the top-level directory of this distribution and at
+// https://github.com/go-vgo/robotgo/blob/master/LICENSE
 //
 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
diff --git a/window/window.h b/window/window.h
deleted file mode 100644
index e69de29..0000000