WordPress3.8 compatible. Add some new features.

git-svn-id: https://plugins.svn.wordpress.org/sqlite-integration/trunk@823587 b8457f37-d9ea-0310-8a92-e5e31aec5664
remove the misleading description from readme.txt

git-svn-id: https://plugins.svn.wordpress.org/sqlite-integration/trunk@823590 b8457f37-d9ea-0310-8a92-e5e31aec5664