Help with short codes iTunes feed

Hi I am a novice, would like to use this plugin. Think it is perfect for my needs, however I am having problems with how to configure the short codes to place on the site. I am affiliate with Linkshare USA and have RSS feed via iTunes feed builder with my affiliate code in it.

How do I create a short code from this feed or others like it?

I could not find directions on how to create itunes feed short code and the Notes page RSS feed example listed would not display anything when posted.

[asaf_atomfeed atomurl=”https://iTunes.apple.com/us/rss/toppaidmacapps/limit=25″ mode=”iOS” more_info_text=”open in App Store…”]

Example of my iTunes feed/Linkshare:

https://itunes.apple.com/us/rss/topalbums/limit=25/genre=22/xml?partnerId=30&LS_PARAM=http%3A%2F%2Fclick.linksynergy.com%2Ffs-bin%2Fstat%3Fid%3DeCgC5zQKQFI%26offerid%3D78524%26type%3D3%26subid%3D0%26tmpid%3D1826%26RD_PARM1%3D

Thanks,

Michelle

https://www.ads-software.com/extend/plugins/app-store-assistant/