Move screenshots to svn assets dir

git-svn-id: https://plugins.svn.wordpress.org/bulk-photo-to-product-importer-extension-for-woocommerce/trunk@773770 b8457f37-d9ea-0310-8a92-e5e31aec5664
Move screenshots to svn assets dir

git-svn-id: https://plugins.svn.wordpress.org/bulk-photo-to-product-importer-extension-for-woocommerce/trunk@773772 b8457f37-d9ea-0310-8a92-e5e31aec5664