2.19 ready.

git-svn-id: https://plugins.svn.wordpress.org/cleantalk-spam-protect/trunk@800824 b8457f37-d9ea-0310-8a92-e5e31aec5664
Readme fixed.

git-svn-id: https://plugins.svn.wordpress.org/cleantalk-spam-protect/trunk@800825 b8457f37-d9ea-0310-8a92-e5e31aec5664