--- a/globalneighbors/grid.py	Sun Jun 25 14:55:53 2017 -0700
+++ b/globalneighbors/grid.py	Sun Jun 25 15:03:54 2017 -0700
@@ -1,4 +1,13 @@
+#!/usr/bin/env python
+
+"""
+grid locations, for speed and fidelity
+"""
+
 import math
+import sys
+from .cli import CitiesParser
+from .locations import locations
 
 class LatLonGrid(object):
 
@@ -71,4 +80,16 @@
     def __init__(self, locations):
         raise NotImplementedError('TODO')
 
-def main(
+def main(args=sys.argv[1:]):
+    """CLI"""
+
+    # parse command line
+    parser = CitiesParser(description=__doc__)
+    options = parser.parse_args(args)
+
+    # read locations
+    city_locations = locations(parser.read_cities())
+
+if __name__ == '__main__':
+    main()
+