New feature 

git-svn-id: https://plugins.svn.wordpress.org/post-slider/trunk@860986 b8457f37-d9ea-0310-8a92-e5e31aec5664
read me update

git-svn-id: https://plugins.svn.wordpress.org/post-slider/trunk@861600 b8457f37-d9ea-0310-8a92-e5e31aec5664