Updating to 0.6.2

git-svn-id: https://plugins.svn.wordpress.org/quiz-master-next/trunk@802089 b8457f37-d9ea-0310-8a92-e5e31aec5664
Updating Readme file for 0.6.2

git-svn-id: https://plugins.svn.wordpress.org/quiz-master-next/trunk@802090 b8457f37-d9ea-0310-8a92-e5e31aec5664