updated read me

git-svn-id: https://plugins.svn.wordpress.org/formcrafts-form-builder/trunk@887991 b8457f37-d9ea-0310-8a92-e5e31aec5664
updated read me

git-svn-id: https://plugins.svn.wordpress.org/formcrafts-form-builder/trunk@887993 b8457f37-d9ea-0310-8a92-e5e31aec5664