The Selfie Boutique, a pop-up art gallery imagined by Alex Altomare, is currently on exhibit at 1827 McGee St. in Kansas City’s Crossroads Arts District. The concept came to Altomare after a visit to the Nelson-Atkins Museum of Art, where he saw people were taking selfies with artwork — which, in his opinion, is not what artwork was intended for. So, he thought, what would art look like if it…