diff --git a/README.en.md b/README.en.md
index ced87a3..25cb826 100644
--- a/README.en.md
+++ b/README.en.md
@@ -44,13 +44,13 @@ Help output under MacOS X:
 ```
 $ ./client_darwin_amd64 -h
 NAME:
-   kcptun - kcptun client
+   kcptun - client(with SMUX)
 
 USAGE:
    client_darwin_amd64 [global options] command [command options] [arguments...]
 
 VERSION:
-   20160820
+   20160922
 
 COMMANDS:
      help, h  Shows a list of commands or help for one command
@@ -58,30 +58,32 @@ COMMANDS:
 GLOBAL OPTIONS:
    --localaddr value, -l value   local listen address (default: ":12948")
    --remoteaddr value, -r value  kcp server address (default: "vps:29900")
-   --key value                   pre-shared secret for client and server (default: "it's a secrect") [$KCPTUN_KEY]
+   --key value                   pre-shared secret between client and server (default: "it's a secrect") [$KCPTUN_KEY]
    --crypt value                 aes, aes-128, aes-192, salsa20, blowfish, twofish, cast5, 3des, tea, xtea, xor, none (default: "aes")
    --mode value                  profiles: fast3, fast2, fast, normal (default: "fast")
    --conn value                  set num of UDP connections to server (default: 1)
-   --mtu value                   set maximum transmission unit of UDP packets (default: 1350)
+   --autoexpire value            set auto expiration time(in seconds) for a single UDP connection, 0 to disable (default: 0)
+   --mtu value                   set maximum transmission unit for UDP packets (default: 1350)
    --sndwnd value                set send window size(num of packets) (default: 128)
    --rcvwnd value                set receive window size(num of packets) (default: 1024)
    --datashard value             set reed-solomon erasure coding - datashard (default: 10)
    --parityshard value           set reed-solomon erasure coding - parityshard (default: 3)
    --dscp value                  set DSCP(6bit) (default: 0)
    --nocomp                      disable compression
+   --log value                   specify a log file to output, default goes to stderr
+   -c value                      config from json file, which will override the command from shell
    --help, -h                    show help
    --version, -v                 print the version
 
-
 $ ./server_darwin_amd64 -h
 NAME:
-   kcptun - kcptun server
+   kcptun - server(with SMUX)
 
 USAGE:
    server_darwin_amd64 [global options] command [command options] [arguments...]
 
 VERSION:
-   20160820
+   20160922
 
 COMMANDS:
      help, h  Shows a list of commands or help for one command
@@ -89,16 +91,18 @@ COMMANDS:
 GLOBAL OPTIONS:
    --listen value, -l value  kcp server listen address (default: ":29900")
    --target value, -t value  target server address (default: "127.0.0.1:12948")
-   --key value               pre-shared secret for client and server (default: "it's a secrect") [$KCPTUN_KEY]
+   --key value               pre-shared secret between client and server (default: "it's a secrect") [$KCPTUN_KEY]
    --crypt value             aes, aes-128, aes-192, salsa20, blowfish, twofish, cast5, 3des, tea, xtea, xor, none (default: "aes")
    --mode value              profiles: fast3, fast2, fast, normal (default: "fast")
-   --mtu value               set maximum transmission unit of UDP packets (default: 1350)
+   --mtu value               set maximum transmission unit for UDP packets (default: 1350)
    --sndwnd value            set send window size(num of packets) (default: 1024)
    --rcvwnd value            set receive window size(num of packets) (default: 1024)
    --datashard value         set reed-solomon erasure coding - datashard (default: 10)
    --parityshard value       set reed-solomon erasure coding - parityshard (default: 3)
    --dscp value              set DSCP(6bit) (default: 0)
    --nocomp                  disable compression
+   --log value               specify a log file to output, default goes to stderr
+   -c value                  config from json file, which will override the command from shell
    --help, -h                show help
    --version, -v             print the version
 ```
diff --git a/README.md b/README.md
index c9acc0a..b09c3b7 100644
--- a/README.md
+++ b/README.md
@@ -41,13 +41,13 @@
 ```
 $ ./client_darwin_amd64 -h
 NAME:
-   kcptun - kcptun client
+   kcptun - client(with SMUX)
 
 USAGE:
    client_darwin_amd64 [global options] command [command options] [arguments...]
 
 VERSION:
-   20160820
+   20160922
 
 COMMANDS:
      help, h  Shows a list of commands or help for one command
@@ -55,30 +55,32 @@ COMMANDS:
 GLOBAL OPTIONS:
    --localaddr value, -l value   local listen address (default: ":12948")
    --remoteaddr value, -r value  kcp server address (default: "vps:29900")
-   --key value                   pre-shared secret for client and server (default: "it's a secrect") [$KCPTUN_KEY]
+   --key value                   pre-shared secret between client and server (default: "it's a secrect") [$KCPTUN_KEY]
    --crypt value                 aes, aes-128, aes-192, salsa20, blowfish, twofish, cast5, 3des, tea, xtea, xor, none (default: "aes")
    --mode value                  profiles: fast3, fast2, fast, normal (default: "fast")
    --conn value                  set num of UDP connections to server (default: 1)
-   --mtu value                   set maximum transmission unit of UDP packets (default: 1350)
+   --autoexpire value            set auto expiration time(in seconds) for a single UDP connection, 0 to disable (default: 0)
+   --mtu value                   set maximum transmission unit for UDP packets (default: 1350)
    --sndwnd value                set send window size(num of packets) (default: 128)
    --rcvwnd value                set receive window size(num of packets) (default: 1024)
    --datashard value             set reed-solomon erasure coding - datashard (default: 10)
    --parityshard value           set reed-solomon erasure coding - parityshard (default: 3)
    --dscp value                  set DSCP(6bit) (default: 0)
    --nocomp                      disable compression
+   --log value                   specify a log file to output, default goes to stderr
+   -c value                      config from json file, which will override the command from shell
    --help, -h                    show help
    --version, -v                 print the version
 
-
 $ ./server_darwin_amd64 -h
 NAME:
-   kcptun - kcptun server
+   kcptun - server(with SMUX)
 
 USAGE:
    server_darwin_amd64 [global options] command [command options] [arguments...]
 
 VERSION:
-   20160820
+   20160922
 
 COMMANDS:
      help, h  Shows a list of commands or help for one command
@@ -86,16 +88,18 @@ COMMANDS:
 GLOBAL OPTIONS:
    --listen value, -l value  kcp server listen address (default: ":29900")
    --target value, -t value  target server address (default: "127.0.0.1:12948")
-   --key value               pre-shared secret for client and server (default: "it's a secrect") [$KCPTUN_KEY]
+   --key value               pre-shared secret between client and server (default: "it's a secrect") [$KCPTUN_KEY]
    --crypt value             aes, aes-128, aes-192, salsa20, blowfish, twofish, cast5, 3des, tea, xtea, xor, none (default: "aes")
    --mode value              profiles: fast3, fast2, fast, normal (default: "fast")
-   --mtu value               set maximum transmission unit of UDP packets (default: 1350)
+   --mtu value               set maximum transmission unit for UDP packets (default: 1350)
    --sndwnd value            set send window size(num of packets) (default: 1024)
    --rcvwnd value            set receive window size(num of packets) (default: 1024)
    --datashard value         set reed-solomon erasure coding - datashard (default: 10)
    --parityshard value       set reed-solomon erasure coding - parityshard (default: 3)
    --dscp value              set DSCP(6bit) (default: 0)
    --nocomp                  disable compression
+   --log value               specify a log file to output, default goes to stderr
+   -c value                  config from json file, which will override the command from shell
    --help, -h                show help
    --version, -v             print the version
 ```
@@ -256,7 +260,7 @@ type Snmp struct {
 
 对该项目的捐款将用于[gonet/2](http://gonet2.github.io/)游戏服务器框架的研发。     
 
-```特别感谢: 郑H立, 南D风, Li, 七q, 凌J，昶，Les*ables, Ky*n, 噼**啦, *斌, 小苍** 等，名字已做特殊处理。```
+```特别感谢: 郑H立, 南D风, Li, 七q, 凌J，昶，Les*ables, Ky*n, 噼**啦, *斌, 小苍**, Ken 等，名字已做特殊处理。```
 
 ### *参考资料* :paperclip:
 1. https://github.com/skywind3000/kcp -- KCP - A Fast and Reliable ARQ Protocol.