Update rotate help option command line option for better explanation of why this feature exist on first place

simtsou.py

@@ -9,7 +9,7 @@ def parser():
     # Specified command options and its helps message
 
     parser.add_argument ("INPUT_FILE", help="Name of the image to be converted.")
-    parser.add_argument ("-r", "--rotate", help="Rotate image 90 degrees.", action='store_true')
+    parser.add_argument ("-r", "--rotate", help="Rotate image 90 degrees for more sexy spectograph looks and sound", action='store_true')
     parser.add_argument ("-i", "--invert", help="Invert image colors.", action='store_true')
     parser.add_argument ("-o", "--output", help="Name of the output wav file. Default value: out.wav).")
     parser.add_argument ("-b", "--bottom", help="Bottom frequency range. Default value: 200.", type=int)