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

@@ -9,7 +9,7 @@ Usage:
 
 Options:
     -d DET_ID       Detector ID
-    -ndu N_DUS      Number of DUs
+    -n N_DUS        Number of DUs
     -o PLOT_DIR     The directory to save the plot 
     -h --help       Show this screen.
 
@@ -22,7 +22,7 @@ import os
 import matplotlib
 from matplotlib import colors
 from datetime import datetime
-
+from docopt import docopt
 import km3pipe as kp
 
 
@@ -31,19 +31,11 @@ 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']
 
 db = kp.db.DBManager()
 sds = kp.db.StreamDS()
@@ -197,9 +189,9 @@ while check:
     iAB2 = np.intersect1d(iAB2_up, iAB2_down)
     iAB3 = np.where(ind[0] > (2*L - 1))
     
-    colorsList = [(0, 0, 0),(1, 0.3, 0),(1, 1, 0),(0.2, 0.9, 0)]
+    colorsList = [(0, 0, 0), (1, 0.3, 0), (1, 1, 0), (0.2, 0.9, 0)]
     CustomCmap = matplotlib.colors.ListedColormap(colorsList)
-    bounds=[-2, -1, 0, 1, 2]
+    bounds = [-2, -1, 0, 1, 2]
     norma = colors.BoundaryNorm(bounds, CustomCmap.N)
     for du in range(N_DUS):
         for ab in range(N_ABS):
@@ -230,7 +222,7 @@ 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))