Saturday evening, I had the pleasure of getting to know Tennessee Williams -- not the real Tennessee Williams, of course, but the man as interpreted by actor/writer William Shuman, who presented his insightful solo show "En Avant! An Evening With Tennessee Williams" at Baruch College this weekend. Dressed in a white suit and blue shirt, Shuman led the audience through this remarkable playwright -- not unlike a grandfather reminiscing about his past to his grandkids. The simpl