Last preparations for Release 1.0.6

git-svn-id: https://plugins.svn.wordpress.org/footnotes/trunk@918179 b8457f37-d9ea-0310-8a92-e5e31aec5664
Update readme.txt

git-svn-id: https://plugins.svn.wordpress.org/footnotes/trunk@918183 b8457f37-d9ea-0310-8a92-e5e31aec5664