update README

Author: SSARCandy

README.md

@@ -1,15 +1,34 @@
-# Coherent-Line-Drawing
+# Coherent Line Drawing
 
-This is an implementation of 'Coherent Line Drawing' by Kang et al, Proc. NPAR 2007 .  
-The project website for that paper is here: http://cg.postech.ac.kr/research/coherent_line/  
-This is a GUI version of CLD.
+An implementation of 'Coherent Line Drawing' by Kang et al, Proc. NPAR 2007 .
 
-### install required:
- - openCV 
- - wxwidget
- - cmake
- 
-### screenshot
+> This paper presents a non-photorealistic rendering technique that
+automatically generates a line drawing from a photograph.
 
-![demo](https://raw.githubusercontent.com/SSARCandy/Coherent-Line-Drawing/master/demo/1.JPG)
-![demo](https://raw.githubusercontent.com/SSARCandy/Coherent-Line-Drawing/master/demo/2.JPG)
+![demo](./demo/4.JPG)
+
+## Build
+
+### Requirement
+
+- OpenCV (prefer 3.0 or higher)
+- wxwidget (prefer 3.0 or higher)
+- cmake
+
+### Enviroment
+
+It should work fine in Windows/Linux/MacOS.  
+But I only tested it in Windows enviroment.
+
+### Pre-Build Version
+
+You can download pre-build version at [here](https://github.com/SSARCandy/Coherent-Line-Drawing/releases/download/1.0.0/release-windows.zip).  
+Please note that this pre-build is for Windows, you can build Mac/Linux version from source.
+
+## Screenshot
+
+![demo](./demo/1.JPG)
+
+![demo](./demo/2.JPG)
+
+![demo](./demo/3.JPG)