Minor logic changes 
Plugin description

git-svn-id: https://plugins.svn.wordpress.org/facebook-shop-by-storeyacom/trunk@783902 b8457f37-d9ea-0310-8a92-e5e31aec5664
readme characters fix

git-svn-id: https://plugins.svn.wordpress.org/facebook-shop-by-storeyacom/trunk@783908 b8457f37-d9ea-0310-8a92-e5e31aec5664
characters fix

git-svn-id: https://plugins.svn.wordpress.org/facebook-shop-by-storeyacom/trunk@783910 b8457f37-d9ea-0310-8a92-e5e31aec5664