update version to 4.0.0-RC2

README.md

@@ -49,7 +49,7 @@ It can be considered as an enhanced JDBC driver, which is fully compatible with
 
 ### Sharding-Proxy
 
-[![Download](https://img.shields.io/badge/release-download-orange.svg)](https://www.apache.org/dyn/closer.cgi?path=incubator/shardingsphere/4.0.0-RC1/apache-shardingsphere-incubating-4.0.0-RC1-sharding-proxy-bin.tar.gz)
+[![Download](https://img.shields.io/badge/release-download-orange.svg)](https://www.apache.org/dyn/closer.cgi?path=incubator/shardingsphere/4.0.0-RC2/apache-shardingsphere-incubating-4.0.0-RC2-sharding-proxy-bin.tar.gz)
 [![Docker Pulls](https://img.shields.io/docker/pulls/shardingsphere/sharding-proxy.svg)](https://store.docker.com/community/images/shardingsphere/sharding-proxy)
 
 Sharding-Proxy defines itself as a transparent database proxy, providing a database server that encapsulates database binary protocol to support heterogeneous languages. 

README_ZH.md

@@ -50,7 +50,7 @@ __Apache官方发布从4.0.0版本开始。__
 
 ### Sharding-Proxy
 
-[![Download](https://img.shields.io/badge/release-download-orange.svg)](https://www.apache.org/dyn/closer.cgi?path=incubator/shardingsphere/4.0.0-RC1/apache-shardingsphere-incubating-4.0.0-RC1-sharding-proxy-bin.tar.gz)
+[![Download](https://img.shields.io/badge/release-download-orange.svg)](https://www.apache.org/dyn/closer.cgi?path=incubator/shardingsphere/4.0.0-RC2/apache-shardingsphere-incubating-4.0.0-RC2-sharding-proxy-bin.tar.gz)
 [![Docker Pulls](https://img.shields.io/docker/pulls/shardingsphere/sharding-proxy.svg)](https://store.docker.com/community/images/shardingsphere/sharding-proxy)
 
 定位为透明化的数据库代理端，提供封装了数据库二进制协议的服务端版本，用于完成对异构语言的支持。

sharding-distribution/sharding-proxy-distribution/pom.xml

@@ -58,7 +58,7 @@
                 <groupId>com.spotify</groupId>
                 <artifactId>docker-maven-plugin</artifactId>
                 <configuration>
-                    <imageName>shardingsphere/sharding-proxy:4.0.0-RC1</imageName>
+                    <imageName>shardingsphere/sharding-proxy:4.0.0-RC2</imageName>
                     <dockerDirectory>${project.basedir}/src/main/docker</dockerDirectory>
                     <resources>
                         <resource>