update readme.txt for mistakes

git-svn-id: https://plugins.svn.wordpress.org/summary-page/trunk@801967 b8457f37-d9ea-0310-8a92-e5e31aec5664
Merge branch 'master' of github.com:guoquan/summary-page

Conflicts:
	readme.txt

git-svn-id: https://plugins.svn.wordpress.org/summary-page/trunk@802291 b8457f37-d9ea-0310-8a92-e5e31aec5664
update meta info in readme.txt and main php header

git-svn-id: https://plugins.svn.wordpress.org/summary-page/trunk@802460 b8457f37-d9ea-0310-8a92-e5e31aec5664