Celebrity chef José Andrés is offering gift cards to Washington, D.C., residents who get the coronavirus vaccine starting Saturday.Andrés tweeted that those who get vaccinated on or after May 8 would qualify for a $50 gift card at ThinkFoodGroup restaurants in D.C. The promotion will run until 70 percent of the population is vaccinated.Ok! We want everyone vaccinated! Starting tomorrow, until we reach 70% of total population anyone that comes...