Merge pull request #11105 from twbs/license-note

Add notes about dual-licensing contributions before switching to MIT in v3.1

CONTRIBUTING.md

@@ -55,4 +55,6 @@ We only accept issues that are bug reports or feature requests. Bugs must be iso
 
 ## License
 
-By contributing your code, you agree to license your contribution under the terms of the APLv2: https://github.com/twbs/bootstrap/blob/master/LICENSE
+With v3.1, we're moving from the Apache 2 to the MIT license for the Bootstrap code (not the docs). We're in the process of collecting permissions from all Bootstrap contributors with code still part of the project to make this happen. For details, please see [#2054](https://github.com/twbs/bootstrap/issues/2054).
+
+By contributing your code, you agree to dual-license your contribution under the [Apache 2](https://github.com/twbs/bootstrap/blob/master/LICENSE) and [MIT](https://github.com/twbs/bootstrap/blob/master/MIT) licenses.

LICENSE-MIT

+The MIT License (MIT)
+
+Copyright (c) 2013 Twitter, Inc
+
+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.

README.md

@@ -113,6 +113,7 @@ More over, if your pull request contains JavaScript patches or features, you mus
 
 Editor preferences are available in the [editor config](.editorconfig) for easy use in common text editors. Read more and download plugins at [http://editorconfig.org](http://editorconfig.org).
 
+With v3.1, we're moving from the Apache 2 to the MIT license for the Bootstrap code (not the docs). Please see the [contributing guidelines](strap/blob/master/CONTRIBUTING.md) for more information.
 
 
 ## Community