Delete readme for update


git-svn-id: https://plugins.svn.wordpress.org/isshrinker/trunk@897288 b8457f37-d9ea-0310-8a92-e5e31aec5664
Upload Readme (Change SJIS to UTF-8)

git-svn-id: https://plugins.svn.wordpress.org/isshrinker/trunk@897289 b8457f37-d9ea-0310-8a92-e5e31aec5664