Updated argument name

README.md

@@ -98,7 +98,7 @@ git version:6e1df4b39f    build date:Oct 24 2017 09:21:15
 repository: https://github.com/wangyu-/udp2raw-tunnel
 
 usage:
-    run as client : ./this_program -c -l local_listen_ip:local_port -r server_ip:server_port  [options]
+    run as client : ./this_program -c -l local_listen_ip:local_port -r remote_host:server_port  [options]
     run as server : ./this_program -s -l server_listen_ip:server_port -r remote_host:remote_port  [options]
 
 common options,these options must be same on both side:

doc/README.zh-cn.md

@@ -102,7 +102,7 @@ git version:adbe7d110f    build date:Sep  6 2017 05:37:45
 repository: https://github.com/wangyu-/udp2raw-tunnel
 
 usage:
-    run as client : ./this_program -c -l local_listen_ip:local_port -r server_ip:server_port  [options]
+    run as client : ./this_program -c -l local_listen_ip:local_port -r remote_host:server_port  [options]
     run as server : ./this_program -s -l server_listen_ip:server_port -r remote_host:remote_port  [options]
 
 common options,these options must be same on both side: