1.add code custom; 2.add show content

Author: shuzijun

CustomCode.md

@@ -3,5 +3,5 @@
   - [English Document]()  
   - [中文文档](https://github.com/shuzijun/leetcode-editor/blob/master/CustomCode_ZH.md)   
   <p align="center">
-    <img src="https://raw.githubusercontent.com/shuzijun/leetcode-editor/dev/doc/customConfig-100.gif" alt="demo"/>
+    <img src="https://raw.githubusercontent.com/shuzijun/leetcode-editor/master/doc/customConfig-100.gif" alt="demo"/>
   </p>  

CustomCode_ZH.md

@@ -3,12 +3,12 @@
   - [English Document](https://github.com/shuzijun/leetcode-editor/blob/master/CustomCode.md)  
   - [中文文档](#配置)   
   <p align="center">
-    <img src="https://raw.githubusercontent.com/shuzijun/leetcode-editor/dev/doc/customConfig-100.gif" alt="demo"/>
+    <img src="https://raw.githubusercontent.com/shuzijun/leetcode-editor/master/doc/customConfig-100.gif" alt="demo"/>
   </p>  
 
 ## 配置  
 <p align="center">
-  <img src="https://raw.githubusercontent.com/shuzijun/leetcode-editor/dev/doc/customConfig.png" alt="customConfig"/>
+  <img src="https://raw.githubusercontent.com/shuzijun/leetcode-editor/master/doc/customConfig.png" alt="customConfig"/>
 </p>  
 
   - **Custom code template**: 开启使用自定义模板，否则使用默认生成格式  

README.md

@@ -16,7 +16,7 @@
 
 ## Local debugging  
 <p align="center">
-  <img src="https://raw.githubusercontent.com/shuzijun/leetcode-editor/dev/doc/customConfig-100.gif" alt="demo"/>
+  <img src="https://raw.githubusercontent.com/shuzijun/leetcode-editor/master/doc/customConfig-100.gif" alt="demo"/>
 </p>  
 
 ### Installation  

README_ZH.md

@@ -15,7 +15,7 @@
 
 ## 本地调试  
 <p align="center">
-  <img src="https://raw.githubusercontent.com/shuzijun/leetcode-editor/dev/doc/customConfig-100.gif" alt="demo"/>
+  <img src="https://raw.githubusercontent.com/shuzijun/leetcode-editor/master/doc/customConfig-100.gif" alt="demo"/>
 </p>  
 
 ### 安装  

doc/leetcode-editor-V5.0.zip

@@ -5,6 +5,7 @@
 import org.apache.velocity.runtime.RuntimeConstants;
 
 import java.io.StringWriter;
+import java.util.Properties;
 
 /**
  * @author shuzijun
@@ -21,7 +22,13 @@ public class VelocityUtils {
         engine.setProperty(RuntimeConstants.PARSER_POOL_SIZE, 20);
         engine.setProperty(RuntimeConstants.INPUT_ENCODING, "UTF-8");
         engine.setProperty(RuntimeConstants.OUTPUT_ENCODING, "UTF-8");
-        engine.init();
+
+        Properties props = new Properties();
+        props.put("runtime.log.logsystem.class", "org.apache.velocity.runtime.log.SimpleLog4JLogSystem");
+        props.put("runtime.log.logsystem.log4j.category", "velocity");
+        props.put("runtime.log.logsystem.log4j.logger", "velocity");
+
+        engine.init(props);
     }
 
     public static String convert(String template, Object data) {