Message that Buttom Maker Pro is available.

git-svn-id: https://plugins.svn.wordpress.org/button-maker/trunk@1049299 b8457f37-d9ea-0310-8a92-e5e31aec5664
Message that Buttom Maker Pro is available.

git-svn-id: https://plugins.svn.wordpress.org/button-maker/trunk@1049307 b8457f37-d9ea-0310-8a92-e5e31aec5664