Love ’em or hate ’em, you can’t deny the versatility of a good pair of sneakers. Make no mistake: We’re not talking about your dad’s old white New Balance runners. We mean sick kicks that can be dressed up for work and down for an easy night out. And we’re not the only fans. Global information company NPD Group reports that athletic footwear sales increased 1 percent from January to August 2013, compared to the year-ago period.