creates timer and corresponding spec, updates jasmine to include files
adds timer spec: define a start time
declares timer.startTime as null
removes accuracyTracker in jasmine (unintentionally omitted)
adds timer spec: should define a finish time
declares timer.finishTime as null
adds timer spec: capture a start time
timer#startTimer redefines startTime as new date
adds timer spec: capture a finish time
timer#stopTimer redefines finishTime as new date
adds timer spec: return time elapsed in minutes
timer#timeElapsedInMinutes returns differene in time /60 000