Birchbox’s first brick-and-mortar store opens today in New York City. According to the firm, the store leverages the insights and feedback gathered since the company’s launch in 2010 from its more than 800,000 active subscribers to create a customer-first, holistic offline shopping experience.   The shop offers a curated product assortment featuring 2,000 products from 250 brands. Birchbox says a vertical merchandising strategy allows consumers to shop by category instead of by brand. The store...