readme edit

git-svn-id: https://plugins.svn.wordpress.org/unpointzero-filemanager/trunk@974816 b8457f37-d9ea-0310-8a92-e5e31aec5664
tagging 0.1.3

git-svn-id: https://plugins.svn.wordpress.org/unpointzero-filemanager/trunk@974820 b8457f37-d9ea-0310-8a92-e5e31aec5664