1. Update README.md.

2. Fix a wrong spelling.

Img2ColorfulChars/Program.cs

@@ -72,7 +72,7 @@ public static void Main(string[] args)
                 bool validScale = int.TryParse(args[1], out hScale);
                 if (!validScale)
                 {
-                    Console.WriteLine("Failed: Scale should be positive integar.");
+                    Console.WriteLine("Failed: Scale should be positive integer.");
                     Environment.Exit(-2);
                 }     
             }

README.md

@@ -1,21 +1,42 @@
 # Img2ColorfulChars
-Load image and print colorful chars in C# console.
+Load an image and print colorful chars in C# console.
+
+## Supported formats
+.jpg; .jpeg; .png; .bmp; .ico; .tiff; **.gif**
 
 ## Usage
-1. Build this project in Visual Studio or use Img2ColorfulChars.exe in _Output.
-2. Run command ```Img2ColorfulChars.exe ImagePath Scale``` and enjoy your colorful chars.  
-``` cmd
-cd _Output
-Img2ColorfulChars.exe np.png 4
-``` 
-> Notice: Scale should be positive integar, and larger scale gets smaller image.  
+1. Get `Img2ColorfulChars.exe` in the following ways.
+  - Build this project in Visual Studio.
+  - Find it in [_Output](_Output).
+  - Find it in [Releases](https://github.com/Roy0309/Img2ColorfulChars/releases).
+
+2. Run `Img2ColorfulChars.exe` in the following ways.
+  - Run command `Img2ColorfulChars.exe ImagePath Scale`. Enjoy!
+  ``` cmd
+  cd _Output
+  Img2ColorfulChars.exe np.png 4
+  ```
+  > Notice: Scale should be positive integer, and larger scale gets smaller image.
+    
+  - Double click `Img2ColorfulChars.exe`. Select an image and set scale (suggested scale as default). Enjoy!
 
 ## Output
+
+### Static image
 Original image:  
-<img width="400" height="400" src="Images/original.png"/>  
+<img width="300" src="Images/original.png"/>  
 
 Output:  
-<img width="400" height="400" src="Images/output.png"/>  
+<img width="300" src="Images/output.png"/>  
+
+### GIF
+Original image:  
+<img width="300" src="Images/original.gif"/>  
+
+Output:  
+<img width="300" src="Images/output.gif"/>  
+
 
 ## 思路总结/zh_CN
-- [来自多彩世界的控制台——C#控制台输出彩色字符 - 简书](https://www.jianshu.com/p/8a083421c11d)
+- [来自多彩世界的控制台——C#控制台输出彩色字符 - 简书](https://www.jianshu.com/p/8a083421c11d)  
+  适用于1.1版。