argument parsing with docopt

LICENSE-MIT

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+Copyright (c) 2012 Vladimir Keleshev, <[email protected]>
+
+Permission is hereby granted, free of charge, to any person
+obtaining a copy of this software and associated
+documentation files (the "Software"), to deal in the Software
+without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense,
+and/or sell copies of the Software, and to permit persons to
+whom the Software is furnished to do so, subject to the
+following conditions:
+
+The above copyright notice and this permission notice shall
+be included in all copies or substantial portions of the
+Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
+KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
+WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
+PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

NOTICE

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 StreamSpot
 
-Unless otherwise noted in this file, all software is
-copyright 2016 Emaad Ahmed Manzoor, licensed under the
-Apache License 2.0.
+  Unless otherwise noted in this file, all software is copyright 2016
+  Emaad Ahmed Manzoor, licensed under the Apache License 2.0.
+  www3.cs.stonybrook.edu/~emanzoor/streamspot/
+
+docopt.cpp
+
+  Copyright (c) 2012 Vladimir Keleshev, <[email protected]>
+  Licensed under the MIT license (see LICENSE-MIT).
+  https://github.com/docopt/docopt.cpp
+
+  Files: docopt.cpp docopt.h docopt_private.h docopt_util.h docopt_value.h
+  Modifications: Remove "#pragma mark" directives.