The Cleveland Park location of D.C.-area based Margruder’s Market is closing its doors this weekend, according to Nbcwashington.com. Saturday will reportedly be the last day of business for the market, located at 3527 Connecticut Avenue NW, at the intersection of Connecticut Avenue and Porter Street NW. It’s a bummer for the adjacent neighborhood, as Magruder’s was a convenient spot to be able to pick up essentials. Magruder’s locations in Gaithersburg, Rockville, Kemp Mill, Vienna, Falls…