calculates cost of running EC2 instances based on log file info about when instances started/stopped
calculates cost of running EC2 instances based on log file info about when instances started/stopped

rootcane/lifeguard,samarunraj/lifeguard,rootcane/lifeguard,samarunraj/lifeguard,samarunraj/lifeguard,samarunraj/lifeguard,rootcane/lifeguard,rootcane/lifeguard