xili-language v.2.15.1 as current version - see change log

git-svn-id: https://plugins.svn.wordpress.org/xili-language/trunk@972174 b8457f37-d9ea-0310-8a92-e5e31aec5664
xili-language v.2.15.1 as current version - see change log - fixes readme format

git-svn-id: https://plugins.svn.wordpress.org/xili-language/trunk@972176 b8457f37-d9ea-0310-8a92-e5e31aec5664