Modified readme.txt: added link to Magali Bourquin website

git-svn-id: https://plugins.svn.wordpress.org/soundy-background-music/trunk@871227 b8457f37-d9ea-0310-8a92-e5e31aec5664
Modified readme.txt

git-svn-id: https://plugins.svn.wordpress.org/soundy-background-music/trunk@871228 b8457f37-d9ea-0310-8a92-e5e31aec5664