Added test commands

Will add unit tests later

aosstower/level_a0/test_cases.txt

+Will write unit tests later, but for now, here are the commands
+time python nc.py /mnt/inst-data/aoss-tower/2015/06/rig_tower.2015-06-06.ascii -o aoss_tower.2015-06-06.nc -z -cs 17280
+
+time python nc.py /mnt/inst-data/aoss-tower/2003/05/rig_tower.2003-05-28.ascii /mnt/inst-data/aoss-tower/2003/07/rig_tower.2003-07-27.ascii /mnt/inst-data/aoss-tower/2009/05/rig_tower.2009-05-28.ascii /mnt/inst-data/aoss-tower/2014/04/rig_tower.2014-04-01.ascii -o aoss_tower.2003-05-28.nc -z -cs 17280 -s 2003-05-28T00:00:00 -e 2014-04-01T23:59:59
+
+time python nc.py /mnt/inst-data/aoss-tower/2003/05/rig_tower.2003-05-28.ascii /mnt/inst-data/aoss-tower/2003/07/rig_tower.2003-07-27.ascii /mnt/inst-data/aoss-tower/2009/05/rig_tower.2009-05-28.ascii /mnt/inst-data/aoss-tower/2014/04/rig_tower.2014-04-01.ascii -o aoss_tower.2003-05-28.nc aoss_tower.2003-07-28.nc aoss_tower.2009-05-28.nc aoss_tower.2014-04-01.nc -z -cs 17280