Updated the wording in the README, it now better reflect the defaults.

README

@@ -16,14 +16,16 @@ Requirements:
 
 Usage instructions:
 
-    On one machine open UDP_client_server.py, change the IP addresses, ports, packet size, etc.
+    On one machine edit UDP_client_server.py, change the IP addresses, ports, packet size, etc
+    accordingly to your network settings.
 
     On the other machine do the same with the UDP_reflector.py
 
-    As default they point to localhost (IPv6), so it is possible to run it on loopback.
+    As default both IPv4 and IPv6 loopback devices are provided in the code,
+    use these as a starting ground for your use-case.
 
-    Start UDP_reflector.py first: python UDP_reflector.py
-    Start UDP_client_server.py: python UDP_client_server.py
+    Start UDP_reflector.py first: python(2) UDP_reflector.py
+    Start UDP_client_server.py: python(2) UDP_client_server.py
 
     Stop with CTRL+C