adding 1.0, 1.1 svn tags and moving screenshots to assets folder and minor readme update.

git-svn-id: https://plugins.svn.wordpress.org/php-event-calendar/trunk@960233 b8457f37-d9ea-0310-8a92-e5e31aec5664
remove screenshot*.png from trunk

git-svn-id: https://plugins.svn.wordpress.org/php-event-calendar/trunk@960234 b8457f37-d9ea-0310-8a92-e5e31aec5664