Add MIT license

LICENSE.md

@@ -0,0 +1,21 @@
+Copyright © 2015 Carles Barrobés and additional contributors.
+
+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.
+
+[MIT License](http://mit-license.org/)

README.md

@@ -11,3 +11,6 @@ Installation
 ```pip install ddt```
 
 More info at http://ddt.readthedocs.org/
+
+See [Contributing](CONTRIBUTING.md) if you plan to contribute to `ddt`,
+and [License](LICENSE.md) if you plan to use it.

ddt.py

@@ -1,3 +1,10 @@
+# -*- coding: utf-8 -*-
+# This file is a part of DDT (https://github.com/txels/ddt)
+# Copyright 2012-2015 Carles Barrobés and DDT contributors
+# For the exact contribution history, see the git revision log.
+# DDT is licensed under the MIT License, included in
+# https://github.com/txels/ddt/blob/master/LICENSE.md
+
 import inspect
 import json
 import os