Update README.md

README.md

@@ -8,7 +8,9 @@ Open source close combat inspired game. Presentation here: http://www.closecomba
 
 # Install
 
-OS require: build-essential libsdl1.2debian libsdl-image1.2 libsdl-image1.2-dev libsdl-ttf2.0-0 libsdl-ttf2.0-dev libsdl-mixer1.2 libsdl-mixer1.2-dev redis-server
+Tested only under linux, debian/Ubuntu. Before install project, install OS packages:
+
+    build-essential libsdl1.2debian libsdl-image1.2 libsdl-image1.2-dev libsdl-ttf2.0-0 libsdl-ttf2.0-dev libsdl-mixer1.2 libsdl-mixer1.2-dev redis-server
 
 Python version: 3.5+