Add "or any later version" qualifier to the GPLv2 statement in the readme

README.md

@@ -5,7 +5,7 @@ Citra Emulator
 
 Citra is an experimental open-source Nintendo 3DS emulator/debugger written in C++. It is written with portability in mind, with builds actively maintained for Windows, Linux and OS X. Citra only emulates a subset of 3DS hardware, and therefore is generally only useful for running/debugging homebrew applications. At this time, Citra is even able to boot several commercial games! Most of these do not run to a playable state, but we are working every day to advance the project forward.
 
-Citra is licensed under the GPLv2. Refer to the license.txt file included. Please read the [FAQ](https://github.com/citra-emu/citra/wiki/FAQ) before getting started with the project.
+Citra is licensed under the GPLv2 (or any later version). Refer to the license.txt file included. Please read the [FAQ](https://github.com/citra-emu/citra/wiki/FAQ) before getting started with the project.
 
 For development discussion, please join us @ #citra on [freenode](http://webchat.freenode.net/?channels=citra).