version 1.2

git-svn-id: https://plugins.svn.wordpress.org/nextgen-gallery-image-optimizer/trunk@833883 b8457f37-d9ea-0310-8a92-e5e31aec5664
fixed readme for 1.2

git-svn-id: https://plugins.svn.wordpress.org/nextgen-gallery-image-optimizer/trunk@833884 b8457f37-d9ea-0310-8a92-e5e31aec5664