Update maven coords in README.md. This also closes apache#1 from github.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/cli/trunk@1678730 13f79535-47bb-0310-9956-ffa450edef68

Author: britter

README.md

@@ -62,7 +62,7 @@ Alternatively you can pull it from the central Maven repositories:
 <dependency>
   <groupId>commons-cli</groupId>
   <artifactId>commons-cli</artifactId>
-  <version>1.2</version>
+  <version>1.3</version>
 </dependency>
 ```