Ok here is what I did —
I edited the plugin PHP file and changed the // Template parse to this …
// Template parse
$vars = array(
'{content}',
'{title}',
'{permalink}',
'{feedurl}',
'{feedtitle}',
'{feedlogo}',
'{campaigntitle}',
'{campaignid}',
'{campaignslug}',
'{readmore}'
);
$replace = array(
$content,
$item->get_title(),
$item->get_link(),
$feed->url,
$feed->title,
$feed->logo,
$campaign->title,
$campaign->id,
$campaign->slug,
$item->get_link()
);
The in the wp-o-matic options added a custom template as follows
{content} <a href="{readmore}">Read more ... </a>