Set path for logfiles to be near home, not whereever run from

pomodoroprompt.py

@@ -91,14 +91,16 @@ def countdown_to(until):
         time.sleep(1)
 
 def prepare_file(utc_start, ext='csv', daily=False):
+    # Save timelogs relative to script directory (NOT from where called)
+    logpath = os.path.dirname(os.path.realpath(__file__)) + '/log'
     # Ensure log directory exists.
-    if not os.path.exists('log'):
-        os.makedirs('log')
+    if not os.path.exists(logpath):
+        os.makedirs(logpath)
     # We consider 3am the switchover to a new day, so we skip extra math
     # and use Pacific time to get three hours later than our Eastern time.
     logpath_tz = timezone('US/Pacific')
     logpath_date = utc_start.astimezone(logpath_tz)
-    timelog_path = 'log/' + str(logpath_date.year);
+    timelog_path = logpath + '/' + str(logpath_date.year);
     if (daily):
         timelog_path += '-' \
         + format(logpath_date.month, '02') + '-' \