updated payloiad factory artifacts

git-svn-id: https://svn.wso2.org/repos/wso2/trunk/commons@195910 a5903396-d722-0410-b921-86c7d4935375
updated ReadMe file

git-svn-id: https://svn.wso2.org/repos/wso2/trunk/commons@195911 a5903396-d722-0410-b921-86c7d4935375