Update readme, update version number

git-svn-id: https://plugins.svn.wordpress.org/ml-slider/trunk@1007274 b8457f37-d9ea-0310-8a92-e5e31aec5664
Increment stable tag

git-svn-id: https://plugins.svn.wordpress.org/ml-slider/trunk@1007277 b8457f37-d9ea-0310-8a92-e5e31aec5664