Embeds a responsive slideshow of Flickr images from any album or photoset
Shortcodes are of the format: [fshow url=https://flic.kr/s/aHsiP3Xyxx] or [fshow photosetid=72157627847553181]
The default parameters for api key, username, user_id and photosetid can have values set using the plugin options page that will then be used by default whenever they are omitted from the shortcode.
