Release version 3.0.0

git-svn-id: https://plugins.svn.wordpress.org/testimonials-widget/trunk@1007448 b8457f37-d9ea-0310-8a92-e5e31aec5664
Add missing files


git-svn-id: https://plugins.svn.wordpress.org/testimonials-widget/trunk@1007449 b8457f37-d9ea-0310-8a92-e5e31aec5664