adding async option to NK import

rowers/runkeeperstuff.py

@@ -92,7 +92,7 @@ def get_runkeeper_workout_list(user):
     return s
 
 # Get workout summary data by Runkeeper ID
-def get_workout(user,runkeeperid):
+def get_workout(user,runkeeperid,do_async=False):
     r = Rower.objects.get(user=user)
     if (r.runkeepertoken == '') or (r.runkeepertoken is None):
         return custom_exception_handler(401,s)