updated demo screenshot

git-svn-id: https://plugins.svn.wordpress.org/wp-easycart/trunk@807868 b8457f37-d9ea-0310-8a92-e5e31aec5664
updated base v2 link to demo

git-svn-id: https://plugins.svn.wordpress.org/wp-easycart/trunk@807869 b8457f37-d9ea-0310-8a92-e5e31aec5664