Add acoustics monitoring

I do not know if I'm doing the right thing. I tried to upload the script "acoustic.py" and I am asked to send a merge request. Is this the correct procedure? @tgal Thank you

scripts/acoustics.py

@@ -16,13 +16,12 @@ Options:
 """
 import numpy as np
 import matplotlib.pyplot as plt
-import argparse
 import time
 import os
 import matplotlib
 from matplotlib import colors
 from datetime import datetime
-
+from docopt import docopt
 import km3pipe as kp
 
 
@@ -31,19 +30,12 @@ def diff(first, second):
     return [item for item in first if item not in second]
 
 
-parser = argparse.ArgumentParser(description = 'Online_monitoring')
-parser.add_argument('-d', dest = 'det_id', type = str, nargs = 1, required = True,
-                    help = 'The detector ID (e.g. D_ORCA005)')
-parser.add_argument('-ndu', dest = 'n_dus', type = int, nargs = 1, required = True,
-                    help = 'Number of DUs (e.g. 5)')
-parser.add_argument('-o', dest = 'plot_dir', type = str, nargs = 1, required = True,
-                    help = 'Directory in which the plot is saved')
-
-args = parser.parse_args()
-detid = args.det_id[0]
-directory = args.plot_dir[0]
-N_DUS = args.n_dus[0]
+args = docopt(__doc__)
 
+detid = args['-d']
+directory = args['-o']
+N_DUS = args['-n']
+N_DUS = int(N_DUS)
 
 db = kp.db.DBManager()
 sds = kp.db.StreamDS()
@@ -230,8 +222,8 @@ while check:
     print(time.time())
                                
     check = False
-    check_time=time.time() - now
+    check_time = time.time() - now
     print(check_time)
        
     time.sleep(abs(TIT - check_time))
-    check = True           
+    check = True