upload maven-wrapper.jar to fix error in execute mvnw & modify branch name in README

README-zh.md

@@ -20,7 +20,7 @@ Spring Cloud Alibaba 致力于提供分布式应用服务开发的一站式解
 ## 如何构建
 
 * master 分支对应的是 Spring Boot 2.x，最低支持 JDK 1.8。
-* support_spring_boot_1 分支对应的是 Spring Boot 1.x，最低支持 JDK 1.7。
+* 1.x 分支对应的是 Spring Boot 1.x，最低支持 JDK 1.7。
 
 Spring Cloud 使用 Maven 来构建，最快的使用方式是将本项目clone到本地，然后执行以下命令：
 

README.md

@@ -22,7 +22,7 @@ For more features please refer to [Roadmap](https://github.com/spring-cloud-incu
 ## How to build
 
 * **master branch**: Corresponds to Spring Boot 2.x. JDK 1.8 or later versions are supported.
-* **support_spring_boot_1 branch**: Corresponds to Spring Boot 1.x，JDK 1.7 or later versions are supported.
+* **1.x branch**: Corresponds to Spring Boot 1.x，JDK 1.7 or later versions are supported.
 
 Spring Cloud uses Maven for most build-related activities, and you should be able to get off the ground quite quickly by cloning the project you are interested in and typing: