Several shoemakers have run well ahead of the market over the past month, kicking the shoe industry group into IBD's top 50 groups. Nike (NKE) is the largest stock in the group by both sales and market capitalization. But with a weak Relative Price Strength Rating, it's not the industry leader. Steven Madden (SHOO), which holds the group's best EPS Rating, is the current leader. Its shares have soared more than 75% since a July low. The designer