new version 2.4.3

git-svn-id: https://plugins.svn.wordpress.org/slider-image/trunk@919654 b8457f37-d9ea-0310-8a92-e5e31aec5664
readme.txt edit

git-svn-id: https://plugins.svn.wordpress.org/slider-image/trunk@919661 b8457f37-d9ea-0310-8a92-e5e31aec5664