update 1.7.2

git-svn-id: https://plugins.svn.wordpress.org/qqworld-auto-save-images/trunk@1008280 b8457f37-d9ea-0310-8a92-e5e31aec5664
update readme.txt

git-svn-id: https://plugins.svn.wordpress.org/qqworld-auto-save-images/trunk@1008281 b8457f37-d9ea-0310-8a92-e5e31aec5664
update

git-svn-id: https://plugins.svn.wordpress.org/qqworld-auto-save-images/trunk@1008282 b8457f37-d9ea-0310-8a92-e5e31aec5664
udpate

git-svn-id: https://plugins.svn.wordpress.org/qqworld-auto-save-images/trunk@1008283 b8457f37-d9ea-0310-8a92-e5e31aec5664