updated readme

git-svn-id: https://plugins.svn.wordpress.org/wp-portability/trunk@984338 b8457f37-d9ea-0310-8a92-e5e31aec5664
fixed typo

git-svn-id: https://plugins.svn.wordpress.org/wp-portability/trunk@984341 b8457f37-d9ea-0310-8a92-e5e31aec5664
trying to find a version number wordpress accepts

git-svn-id: https://plugins.svn.wordpress.org/wp-portability/trunk@984345 b8457f37-d9ea-0310-8a92-e5e31aec5664
finally found where wordpress pulls the version number

git-svn-id: https://plugins.svn.wordpress.org/wp-portability/trunk@984349 b8457f37-d9ea-0310-8a92-e5e31aec5664