update docs

spring-cloud-alibaba-docs/src/main/asciidoc-zh/dependency-management.adoc

@@ -2,3 +2,37 @@
 
 Spring Cloud Alibaba BOM 包含了它所使用的所有依赖的版本。
 
+### Spring Cloud Alibaba Bill of Materials (BOM)
+
+如果您是 Maven Central 用户，请将我们的 BOM 添加到您的 pom.xml 中的 <dependencyManagement> 部分。 这将允许您省略任何Maven依赖项的版本，而是将版本控制委派给BOM。
+
+<dependencyManagement>
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework.cloud</groupId>
+            <artifactId>spring-cloud-alibaba-dependencies</artifactId>
+            <version>2.1.0.RELEASE</version>
+            <type>pom</type>
+            <scope>import</scope>
+        </dependency>
+    </dependencies>
+</dependencyManagement>
+
+### Spring Snapshots Maven Repository
+
+如果要使用最新的 BUILD-SNAPSHOT 版本，请在 pom.xml 中添加 Spring Snapshot Repository，注意：BUILD-SNAPSHOT随时可能更新:
+
+<repositories>
+    <repository>
+        <id>spring-snapshots</id>
+        <name>Spring SnapShots</name>
+        <url>https://repo.spring.io/libs-snapshot</url>
+        <snapshots>
+            <enabled>true</enabled>
+        </snapshots>
+    </repository>
+</repositories>
+
+举个例子, 0.2.0.BUILD-SNAPSHOT 版本就在这个仓库中可用。
+
+

spring-cloud-alibaba-docs/src/main/asciidoc/dependency-management.adoc

@@ -1,38 +1,34 @@
 == Dependency Management
 
-The Spring Cloud Alibaba Bill of Materials (BOM) contains the versions of all the dependencies it uses.
+### Spring Cloud Alibaba Bill of Materials (BOM)
 
-Version 0.2.2.BUILD-SNAPSHOT is compatible with the Spring Cloud Finchley. Version 0.1.1.RELEASE is compatible with the Spring Cloud Edgware.
+If you’re a Maven Central user, add our BOM to your pom.xml <dependencyManagement> section. This will allow you to omit versions for any of the Maven dependencies and instead delegate versioning to the BOM.
 
-These artifacts are available from Maven Central and Spring Release repository via BOM:
-
-[source,xml]
-----
 <dependencyManagement>
     <dependencies>
         <dependency>
             <groupId>org.springframework.cloud</groupId>
             <artifactId>spring-cloud-alibaba-dependencies</artifactId>
-            <version>0.2.2.BUILD-SNAPSHOT</version>
+            <version>2.1.0.RELEASE</version>
             <type>pom</type>
             <scope>import</scope>
         </dependency>
     </dependencies>
 </dependencyManagement>
-----
 
-If you want to use the latest BUILD-SNAPSHOT version, add Spring Snapshot Repository in pom.xml , Attention: BUILD-SNAPSHOT may be updated in any time
+### Spring Snapshots Maven Repository
+
+If you want to use the latest BUILD-SNAPSHOT version, add Spring Snapshot Repository in pom.xml , Attention: BUILD-SNAPSHOT may be updated in any time:
 
-[source,xml]
-----
 <repositories>
     <repository>
-        <id>spring-snapshot</id>
-        <name>Spring Snapshot Repository</name>
-        <path>https://repo.spring.io/snapshot</path>
+        <id>spring-snapshots</id>
+        <name>Spring SnapShots</name>
+        <url>https://repo.spring.io/libs-snapshot</url>
         <snapshots>
             <enabled>true</enabled>
         </snapshots>
     </repository>
 </repositories>
-----
+
+For example, the 0.2.0.BUILD-SNAPSHOT is available from this repository.