change to single MIT license. update banners in source files

src/intro.js

@@ -1,15 +1,13 @@
 /*!
  * <%= meta.title %> v<%= meta.version %>
- * <%= meta.homepage %>
- *
+ * Docs & License: <%= meta.homepage %>
+ * (c) <%= meta.copyright %>
+ */
+
+/*
  * Use fullcalendar.css for basic styling.
  * For event drag & drop, requires jQuery UI draggable.
  * For event resizing, requires jQuery UI resizable.
- *
- * (c) <%= meta.copyright %>
- * Dual licensed under the MIT and GPL licenses, located in
- * MIT-LICENSE.txt and GPL-LICENSE.txt respectively.
- *
  */
  
 (function($, undefined) {