new screenshots and updated readme file

git-svn-id: https://plugins.svn.wordpress.org/privy-website-widget/trunk@1038220 b8457f37-d9ea-0310-8a92-e5e31aec5664
new screenshots

git-svn-id: https://plugins.svn.wordpress.org/privy-website-widget/trunk@1038227 b8457f37-d9ea-0310-8a92-e5e31aec5664