Updated some image files

git-svn-id: https://plugins.svn.wordpress.org/pricing-table/trunk@977052 b8457f37-d9ea-0310-8a92-e5e31aec5664
Updated image file

git-svn-id: https://plugins.svn.wordpress.org/pricing-table/trunk@977054 b8457f37-d9ea-0310-8a92-e5e31aec5664
Updated image

git-svn-id: https://plugins.svn.wordpress.org/pricing-table/trunk@977055 b8457f37-d9ea-0310-8a92-e5e31aec5664