update version

git-svn-id: https://plugins.svn.wordpress.org/custom-maintenance-mode/trunk@864002 b8457f37-d9ea-0310-8a92-e5e31aec5664
update

git-svn-id: https://plugins.svn.wordpress.org/custom-maintenance-mode/trunk@864005 b8457f37-d9ea-0310-8a92-e5e31aec5664
update

git-svn-id: https://plugins.svn.wordpress.org/custom-maintenance-mode/trunk@864019 b8457f37-d9ea-0310-8a92-e5e31aec5664
update screenshot

git-svn-id: https://plugins.svn.wordpress.org/custom-maintenance-mode/trunk@864040 b8457f37-d9ea-0310-8a92-e5e31aec5664
Update

git-svn-id: https://plugins.svn.wordpress.org/custom-maintenance-mode/trunk@866670 b8457f37-d9ea-0310-8a92-e5e31aec5664