updating readme and screenshots

git-svn-id: https://plugins.svn.wordpress.org/widget-wrangler/trunk@881107 b8457f37-d9ea-0310-8a92-e5e31aec5664
updating readme and screenshots

git-svn-id: https://plugins.svn.wordpress.org/widget-wrangler/trunk@881108 b8457f37-d9ea-0310-8a92-e5e31aec5664
readmet

git-svn-id: https://plugins.svn.wordpress.org/widget-wrangler/trunk@881111 b8457f37-d9ea-0310-8a92-e5e31aec5664