WP2Cloud - doc update

* Declare compatibility up to WordPress 3.7
* Update wp-smush.it FAQ entry: add a link to the patch that makes it work



git-svn-id: https://plugins.svn.wordpress.org/wp2cloud-wordpress-to-cloud/trunk@803463 b8457f37-d9ea-0310-8a92-e5e31aec5664