Add "The Bootstrap Authors" to copyright notices (#19936)

❤️❤️❤️ https://github.com/twbs/bootstrap/graphs/contributors

docs/assets/js/ie-emulation-modes-warning.js

@@ -2,6 +2,7 @@
 // IT'S JUST JUNK FOR OUR DOCS!
 // ++++++++++++++++++++++++++++++++++++++++++
 /*!
+ * Copyright 2014-2015 The Bootstrap Authors
  * Copyright 2014-2015 Twitter, Inc.
  *
  * Licensed under the Creative Commons Attribution 3.0 Unported License. For

docs/assets/js/ie10-viewport-bug-workaround.js

@@ -1,5 +1,6 @@
 /*!
  * IE10 viewport hack for Surface/desktop Windows 8 bug
+ * Copyright 2014-2015 The Bootstrap Authors
  * Copyright 2014-2015 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  */

docs/assets/js/src/application.js

@@ -4,6 +4,7 @@
 
 /*!
  * JavaScript for Bootstrap's docs (http://getbootstrap.com)
+ * Copyright 2011-2016 The Bootstrap Authors
  * Copyright 2011-2016 Twitter, Inc.
  * Licensed under the Creative Commons Attribution 3.0 Unported License. For
  * details, see https://creativecommons.org/licenses/by/3.0/.

docs/assets/scss/docs.scss

@@ -1,5 +1,6 @@
 /*!
  * Bootstrap Docs (http://getbootstrap.com)
+ * Copyright 2011-2016 The Bootstrap Authors
  * Copyright 2011-2016 Twitter, Inc.
  * Licensed under the Creative Commons Attribution 3.0 Unported License. For
  * details, see https://creativecommons.org/licenses/by/3.0/.

docs/getting-started/browsers-devices.md

@@ -174,6 +174,7 @@ See [this StackOverflow question](https://stackoverflow.com/questions/6771258/wh
 Internet Explorer 10 in Windows Phone 8 versions older than [Update 3 (a.k.a. GDR3)](http://blogs.windows.com/windows_phone/b/wpdev/archive/2013/10/14/introducing-windows-phone-preview-for-developers.aspx) doesn't differentiate **device width** from **viewport width** in `@-ms-viewport` at-rules, and thus doesn't properly apply the media queries in Bootstrap's CSS. To address this, you'll need to **include the following JavaScript to work around the bug**.
 
 {% highlight js %}
+// Copyright 2014-2015 The Bootstrap Authors
 // Copyright 2014-2015 Twitter, Inc.
 // Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
 if (navigator.userAgent.match(/IEMobile\/10\.0/)) {