added v4.9.0 section.

Author: steenzout

README.md

@@ -93,6 +93,10 @@ Use `--skip-tags=debug` if you want to suppress debug information.
 
 ## Changelog
 
+- v4.9.0 : 9 Sep 2015
+    - merged with primogen v9
+    - [issue #5: removed duplicate parameter](https://github.com/ansiblebit/oracle-java/pull/4) [cyfdecyf](https://github.com/cyfdecyf)
+    - remove duplicate provision task
 - v4.7.2 : 24 Aug 2015
     - usage of alternatives module to set Java default version on RedHat environments
     - updated default version to Java 1.8u60-b27