updated compitability

git-svn-id: https://plugins.svn.wordpress.org/import-csv-files/trunk@981617 b8457f37-d9ea-0310-8a92-e5e31aec5664
updated compatibility

git-svn-id: https://plugins.svn.wordpress.org/import-csv-files/trunk@981619 b8457f37-d9ea-0310-8a92-e5e31aec5664