Add license file

LICENSE.txt

@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2016 Inpsyde GmbH
+
+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

@@ -55,7 +55,8 @@ You can also use the plugin [Chosen for MantisBT](https://github.com/bueltge/Cho
 # Other Notes
 
 ### License
-Good news, this script is free for everyone! Since it's released under the GPL, you can use it free of charge on your personal or commercial blog. But if you enjoy this script, you can thank me and leave a [small donation](http://bueltge.de/wunschliste/) for the time I've spent writing and supporting this script. And I really don't want to know how many hours of my life this plugin has already eaten ;)
+Good news, this script is free for everyone! Since it's released under [the MIT](https://github.com/bueltge/MantisBT-Colorized/blob/master/LICENSE.txt).
+But if you enjoy this style, you can thank me and leave a [donation](http://bueltge.de/wunschliste/) for the time I've spent writing and supporting this project. And I really don't want to know how many hours of my life this plugin has already eaten ;)
 
 ### Contact & Feedback
 This script is designed and developed by me ([Frank Bültge](http://bueltge.de)), [G+ Page](https://plus.google.com/111291152590065605567/about?rel=author)