Mention new repository in readme. (#755)

Author: maciejwalkowiak

README.adoc

@@ -8,6 +8,8 @@ Edit the files in the src/main/asciidoc/ directory instead.
 
 Spring Cloud for Amazon Web Services, part of the Spring Cloud umbrella project, eases the integration with hosted Amazon Web Services. It offers a convenient way to interact with AWS provided services using well-known Spring idioms and APIs, such as the messaging or caching API. Developers can build their application around the hosted services without having to care about infrastructure or maintenance.
 
+> *Note:* Further Spring Cloud AWS versions development moved to https://github.com/awspring/spring-cloud-aws[awspring/spring-cloud-aws]. The only active branch in this repository is *2.2.x*.
+
 = Checking out and building
 To check out the project and build it from source, do the following:
 

docs/src/main/asciidoc/README.adoc

@@ -2,6 +2,8 @@
 
 include::intro.adoc[]
 
+> *Note:* Further Spring Cloud AWS versions development moved to https://github.com/awspring/spring-cloud-aws[awspring/spring-cloud-aws]. The only active branch in this repository is *2.2.x*.
+
 = Checking out and building
 To check out the project and build it from source, do the following: