Update readme regarding /content and /var/discovery
Update readme regarding /content and /var/discovery

sandroboehme/publick-sling-blog,raducotescu/publick-sling-blog,phornig/publick-sling-blog,nateyolles/publick-sling-blog,raducotescu/publick-sling-blog,nateyolles/publick-sling-blog,sandroboehme/publick-sling-blog,phornig/publick-sling-blog,dulvac/publick-sling-blog,nateyolles/publick-sling-blog,raducotescu/publick-sling-blog,phornig/publick-sling-blog,dulvac/publick-sling-blog,dulvac/publick-sling-blog,sandroboehme/publick-sling-blog