Support search keyword replacement too

git-svn-id: https://plugins.svn.wordpress.org/amazon-affiliate-link-globalizer/trunk@791726 b8457f37-d9ea-0310-8a92-e5e31aec5664
fix 1.1 tag

git-svn-id: https://plugins.svn.wordpress.org/amazon-affiliate-link-globalizer/trunk@791734 b8457f37-d9ea-0310-8a92-e5e31aec5664