new read me.txt file

git-svn-id: https://plugins.svn.wordpress.org/anywhere-flash-embed/trunk@1040445 b8457f37-d9ea-0310-8a92-e5e31aec5664
adding new readme.txt file

git-svn-id: https://plugins.svn.wordpress.org/anywhere-flash-embed/trunk@1040449 b8457f37-d9ea-0310-8a92-e5e31aec5664