1.2 version update

git-svn-id: https://plugins.svn.wordpress.org/onet-regenerate-thumbnails/trunk@785442 b8457f37-d9ea-0310-8a92-e5e31aec5664
Quick update notice change.

git-svn-id: https://plugins.svn.wordpress.org/onet-regenerate-thumbnails/trunk@785452 b8457f37-d9ea-0310-8a92-e5e31aec5664