Global beverage giant Diageo has confirmed the acquisition of Casamigos, a “super-premium” tequila brand for $1 billion. Casamiro was founded in 2013, and is described by Diageo as the fastest growing tequila brand in the US, increasinb sales by 54% over the last two years. The transaction, where is expected to close in the second half of 2017, values the company at up to $1 billion. Diageo will pay $700 …