Update readme.txt

git-svn-id: https://plugins.svn.wordpress.org/easy-digital-downloads-https/trunk@1018064 b8457f37-d9ea-0310-8a92-e5e31aec5664
Update readme.txt

git-svn-id: https://plugins.svn.wordpress.org/easy-digital-downloads-https/trunk@1018065 b8457f37-d9ea-0310-8a92-e5e31aec5664