readme update

git-svn-id: https://plugins.svn.wordpress.org/slickquiz/trunk@873152 b8457f37-d9ea-0310-8a92-e5e31aec5664
fixes readme syntax issue, resolves options page apostrophe escaping bug; closes #25

git-svn-id: https://plugins.svn.wordpress.org/slickquiz/trunk@873153 b8457f37-d9ea-0310-8a92-e5e31aec5664
start button should enable after name only or email and name are entered; closes issue #42

git-svn-id: https://plugins.svn.wordpress.org/slickquiz/trunk@873154 b8457f37-d9ea-0310-8a92-e5e31aec5664