update to version 1.0

git-svn-id: https://plugins.svn.wordpress.org/offer-calc/trunk@969533 b8457f37-d9ea-0310-8a92-e5e31aec5664
update to version 1.0

git-svn-id: https://plugins.svn.wordpress.org/offer-calc/trunk@969536 b8457f37-d9ea-0310-8a92-e5e31aec5664