Aug. 11 marks the one year anniversary of Robin Williams' death. There have already been tributes from news sites and ways to remember him, like which of his movies to stream . One heart-felt remembrance leapt out from Sarah Michelle Gellar as she posted the following picture to her Instagram . "To laugh often and much; to win the respect of the intelligent people and the affection of children; to earn the appreciation of honest critics and endure the betrayal of false friends; to appreciate be…