update screenshot

git-svn-id: https://plugins.svn.wordpress.org/pojo-builder-animation/trunk@977076 b8457f37-d9ea-0310-8a92-e5e31aec5664
update readme

git-svn-id: https://plugins.svn.wordpress.org/pojo-builder-animation/trunk@977078 b8457f37-d9ea-0310-8a92-e5e31aec5664