update to v 0.6.

git-svn-id: https://plugins.svn.wordpress.org/suffusion-collapse-menu/trunk@1039702 b8457f37-d9ea-0310-8a92-e5e31aec5664
stable ver. 0.6

git-svn-id: https://plugins.svn.wordpress.org/suffusion-collapse-menu/trunk@1039704 b8457f37-d9ea-0310-8a92-e5e31aec5664