Change to MIT copyright

* Added unicode copyright to CLDR-derived mapping.

tz.cpp

@@ -1,6 +1,24 @@
-// Howard Hinnant
-// This work is licensed under a Creative Commons Attribution 4.0 International License.
-// http://creativecommons.org/licenses/by/4.0/
+// The MIT License (MIT)
+// 
+// Copyright (c) 2015 Howard Hinnant
+// 
+// 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.
 
 #include "tz_private.h"
 
@@ -352,7 +370,9 @@ load_timezone_mappings_from_csv_file(const std::string& input_path)
         if (is.gcount() != 1 || field_delim != ',')
             error("delimiter ',' expected");
     };
-
+    std::string copyright;
+    for (int i = 0; i < 4; ++i)
+        getline(is, copyright);
     for (;;)
     {
         timezone_mapping zm{};