COVENTRY, R.I. — Sixth-grader Olivia Murphy eagerly awaits the time when her social studies classes turn to the Revolutionary War.She's ready to share what she has learned after eight years of reenacting the period with her parents, Angela and Edward Murphy of Sandown, N.H.Already, as her friends learn about the family's travels, such as this weekend's trip to Rhode Island, she said: "All my friends ask me questions."The family and about 100 others have [...]