Merge pull request #31 from yuetang95/master

update client version to 1.2.1

Author: YueTang-Vanessa

pom.xml

@@ -2,7 +2,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.amazonaws</groupId>
   <artifactId>elasticache-java-cluster-client</artifactId>
-  <version>1.2.0</version>
+  <version>1.2.1</version>
     <build>
         <plugins>
             <plugin>