[doc] Add runtime requirements

Author: g3force

README.md

@@ -10,6 +10,12 @@ The [ssl-refbox](https://github.com/RoboCup-SSL/ssl-refbox) replacement that wil
 ## Usage
 If you just want to use this app, simply download the latest [release binary](https://github.com/RoboCup-SSL/ssl-game-controller/releases/latest). The binary is self-contained. No dependencies are required.
 
+### Runtime Requirements
+ * No software dependencies (except for development, see below)
+ * 64bit Linux, Windows, OSX (32bit would be possible too, but we are in 2018...)
+ * Display Resolution of at least 1440x720 (unless better scaling is implemented)
+ * A reasonable Web-Browser (mostly tested on Chrome, please do not try IE...)
+
 ### Reference Clients
 There are some reference clients:
  * [ssl-ref-client](./cmd/ssl-ref-client): A client that receives referee messages