add ms_sum creates sync like output without gap information

ms_sum.py

+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+'''
+Lloyd Carothers
+ms_sum
+prints a sync like output ignoring all gaps
+'''
+import os, sys
+import obspy
+from obspy.io.mseed.core import _is_mseed
+
+# debug testing
+print(__file__)
+print(sys.path)
+
+from nexus import InventoryIm
+
+if __name__ == '__main__':
+    inv = InventoryIm()
+    streams = []
+    for path in sys.argv[1:]:
+        if os.path.isfile(path) and _is_mseed(path):
+            st = obspy.read(path, headonly=True)
+            print(st)
+        elif os.path.isdir(path):
+            for root, dirs, files in os.walk(path):
+                for file in files:
+                    path = os.path.join(root, file)
+                    if _is_mseed(path):
+                        st = obspy.read(path, headonly=True)
+                        print(st)