Updated to version 2.0

git-svn-id: https://plugins.svn.wordpress.org/quiz-pro/trunk@746162 b8457f37-d9ea-0310-8a92-e5e31aec5664
update

git-svn-id: https://plugins.svn.wordpress.org/quiz-pro/trunk@746164 b8457f37-d9ea-0310-8a92-e5e31aec5664