Added command-line options to README.
Added command-line options to README.

leverich/mutilate,dschatzberg/mutilate,shaygalon/memcache-perf,felipems/mutilate_rocks,dschatzberg/mutilate,andrewbartolo/mutilate,felipems/mutilate_rocks,ConnorDoyle/mutilate,felipems/mutilate_rocks,leverich/mutilate,ConnorDoyle/mutilate,ConnorDoyle/mutilate,andrewbartolo/mutilate,IMCG/multilate,IMCG/multilate,shaygalon/memcache-perf,felipems/mutilate_rocks,ConnorDoyle/mutilate,leverich/mutilate,dschatzberg/mutilate,IMCG/multilate,dschatzberg/mutilate,leverich/mutilate,IMCG/multilate,shaygalon/memcache-perf