Bump copyright year.

[ci skip]

docs/assets/css/src/docs.css

 /*!
  * Bootstrap Docs (http://getbootstrap.com)
- * Copyright 2011-2014 Twitter, Inc.
+ * Copyright 2011-2015 Twitter, Inc.
  * Licensed under the Creative Commons Attribution 3.0 Unported License. For
  * details, see http://creativecommons.org/licenses/by/3.0/.
  */

docs/assets/js/src/application.js

@@ -4,7 +4,7 @@
 
 /*!
  * JavaScript for Bootstrap's docs (http://getbootstrap.com)
- * Copyright 2011-2014 Twitter, Inc.
+ * Copyright 2011-2015 Twitter, Inc.
  * Licensed under the Creative Commons Attribution 3.0 Unported License. For
  * details, see http://creativecommons.org/licenses/by/3.0/.
  */

docs/assets/js/src/customizer.js

 /*!
  * Bootstrap Customizer (http://getbootstrap.com/customize/)
- * Copyright 2011-2014 Twitter, Inc.
+ * Copyright 2011-2015 Twitter, Inc.
  *
  * Licensed under the Creative Commons Attribution 3.0 Unported License. For
  * details, see http://creativecommons.org/licenses/by/3.0/.

grunt/bs-commonjs-generator.js

+/*!
+ * Bootstrap Grunt task for the CommonJS module generation
+ * http://getbootstrap.com
+ * Copyright 2014-2015 Twitter, Inc.
+ * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
+ */
+
 'use strict';
 
 var fs = require('fs');

grunt/bs-glyphicons-data-generator.js

 /*!
  * Bootstrap Grunt task for Glyphicons data generation
  * http://getbootstrap.com
- * Copyright 2014 Twitter, Inc.
+ * Copyright 2014-2015 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  */
+
 'use strict';
+
 var fs = require('fs');
 
 module.exports = function generateGlyphiconsData(grunt) {

grunt/bs-lessdoc-parser.js

 /*!
  * Bootstrap Grunt task for parsing Less docstrings
  * http://getbootstrap.com
- * Copyright 2014 Twitter, Inc.
+ * Copyright 2014-2015 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  */
+
 'use strict';
 
 var Markdown = require('markdown-it');

grunt/bs-raw-files-generator.js

 /*!
  * Bootstrap Grunt task for generating raw-files.min.js for the Customizer
  * http://getbootstrap.com
- * Copyright 2014 Twitter, Inc.
+ * Copyright 2014-2015 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  */