It reported fabulous second-quarter results.Shopify (SHOP 2.42%) stock has popped 26% since releasing its phenomenal second-quarter earnings results on Aug. 7, but it's still down over 50% in the past three years. There's been a lot going on at Shopify that's keeping investors on their toes. Let's see where the business is today and whether or not it's a good time to buy shares.Growth has been better than expectedLet's take a step back and give the recent earnings report some context. Shopify, which offers ...