readme updates, and file size debugging on Optimize More

git-svn-id: https://plugins.svn.wordpress.org/ewww-image-optimizer/trunk@823363 b8457f37-d9ea-0310-8a92-e5e31aec5664
missed version update

git-svn-id: https://plugins.svn.wordpress.org/ewww-image-optimizer/trunk@823382 b8457f37-d9ea-0310-8a92-e5e31aec5664