Update license to MIT

Author: Thibaut Despoulain

README.md

@@ -4,16 +4,11 @@ HexGL
 Source code of [HexGL](http://hexgl.bkcore.com), the futuristic HTML5 racing game by [Thibaut Despoulain](http://bkcore.com)
 
 ## Branches
-  * **[Master](https://github.com/BKcore/HexGL)** - Public release (stable), same version as on the website.
-  * **[Dev](https://github.com/BKcore/HexGL/tree/dev)** - Latest revisions (highly unstable).
+  * **[Master](https://github.com/BKcore/HexGL)** - Public release (stable).
 
 ## License
 
-Unless specified in the file, HexGL's code and resources are licensed under the *Creative Commons Attribution-NonCommercial 3.0 Unported License*.
-
-To view a copy of this license, visit http://creativecommons.org/licenses/by-nc/3.0/.
-
-If you feel like you deserve another license for a special case, [drop me a note](http://bkcore.com/contact.html), and we'll talk about it.
+Unless specified in the file, HexGL's code and resources are now licensed under the *MIT License*.
 
 ## Installation