Update 4. Working with Spring Boot.md

I. Spring Boot Documentation/4. Working with Spring Boot.md

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+### 4. 使用Spring Boot
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+准备开始实际使用Spring Boot？[我们已经为你做好掩护](http://docs.spring.io/spring-boot/docs/current-SNAPSHOT/reference/htmlsingle/#using-boot).
+
+- 构建系统：[Maven](http://docs.spring.io/spring-boot/docs/current-SNAPSHOT/reference/htmlsingle/#using-boot-maven)｜[Gradle](http://docs.spring.io/spring-boot/docs/current-SNAPSHOT/reference/htmlsingle/#using-boot-gradle)｜[Ant](http://docs.spring.io/spring-boot/docs/current-SNAPSHOT/reference/htmlsingle/#using-boot-ant)｜[Starter POMs](http://docs.spring.io/spring-boot/docs/current-SNAPSHOT/reference/htmlsingle/#using-boot-starter-poms)
+- 最佳实践：[代码结构](http://docs.spring.io/spring-boot/docs/current-SNAPSHOT/reference/htmlsingle/#using-boot-structuring-your-code)｜[@Configuration](http://docs.spring.io/spring-boot/docs/current-SNAPSHOT/reference/htmlsingle/#using-boot-configuration-classes)｜[@EnableAutoConfiguration](http://docs.spring.io/spring-boot/docs/current-SNAPSHOT/reference/htmlsingle/#using-boot-auto-configuration)｜[Beans和依赖注入](http://docs.spring.io/spring-boot/docs/current-SNAPSHOT/reference/htmlsingle/#using-boot-spring-beans-and-dependency-injection)
+- 运行代码：[IDE](http://docs.spring.io/spring-boot/docs/current-SNAPSHOT/reference/htmlsingle/#using-boot-running-from-an-ide)｜[Packaged](http://docs.spring.io/spring-boot/docs/current-SNAPSHOT/reference/htmlsingle/#using-boot-running-as-a-packaged-application)｜[Maven](http://docs.spring.io/spring-boot/docs/current-SNAPSHOT/reference/htmlsingle/#using-boot-running-with-the-maven-plugin)｜[Gradle](http://docs.spring.io/spring-boot/docs/current-SNAPSHOT/reference/htmlsingle/#using-boot-running-with-the-gradle-plugin)
+- 应用打包：[生产jars](http://docs.spring.io/spring-boot/docs/current-SNAPSHOT/reference/htmlsingle/#using-boot-packaging-for-production)
+- Spring Boot命令行：[使用CLI](http://docs.spring.io/spring-boot/docs/current-SNAPSHOT/reference/htmlsingle/#cli)