Changed CL arg from paths to path

rtleap.py

@@ -793,7 +793,7 @@ if __name__ == '__main__':
                           'start before 2017:001:00:00 and contain the DSP '
                           'CLOCK SET of the DAS correcting for the leap second.'
                            % VERSION)
-    parser.add_argument('paths',
+    parser.add_argument('path',
                         nargs='*',
                         default=['./'],
                         help='Input CF dirs. The root dir of a CF card '
@@ -833,7 +833,7 @@ if __name__ == '__main__':
 
     refs = []
 
-    for path in args.paths:
+    for path in args.path:
         if os.path.isdir(path):
             ref = RtCfDir(path)
         else: