Wal-Mart Stores Inc.'s U.K. Asda Supermarket Entices Shoppers With Black Friday Deals [Getty Images]

Customers wait to enter an Asda supermarket, operated by Wal-Mart Stores Inc., ahead of a Black Friday discount sale in the Wembley district of London, U.K., on Friday, Nov. 28, 2014. Black Friday has caught on in the U.K. and worldwide over the last few years as the rise of the Internet has made the event a global phenomenon, with customers always being just one click away from the deals offered by U.S. retailers online. Photographer: Simon Dawson/Bloomberg via Getty Images

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