diff --git a/README.md b/README.md
index 7b4e71f5..9e9ca4c3 100644
--- a/README.md
+++ b/README.md
@@ -20,11 +20,12 @@ Features
 --------
 
 Shadowsocks-libev is writen in C and only depends on
-[libev](http://software.schmorp.de/pkg/libev.html). When statically linked and
-packaged for OpenWRT, the total binary size is 23KB. In normal usage, the memory 
-consumption is about 600KB and the CPU utilization is no more than 5%, which is tested
-in a low-end router (Buffalo WHR-G300N V2 with a 400MHz MIPS CPU, 32MB memory
-and 4MB flash).
+[libev](http://software.schmorp.de/pkg/libev.html).
+
+When statically linked and packaged for OpenWRT, the total package size is 23KB. 
+In normal usage, the memory consumption is about 600KB and the CPU utilization is 
+no more than 5% on a low-end router (Buffalo WHR-G300N V2 with a 400MHz MIPS CPU, 
+32MB memory and 4MB flash).
 
 Installation
 ------------
@@ -40,10 +41,16 @@ Usage
 -----
 
 ```
-    usage:  ss  -s server_host -p server_port -l local_port
-                -k password [-m encrypt_method] [-f pid_file]
+usage:
+
+    ss -s server_host -p server_port -l local_port -k password
+       [-m encrypt_method] [-f pid_file] [-t timeout] [-c config_file]
+
+options:
+
+    encrypt_method:     table, rc4
+          pid_file:     valid path to the pid file
+           timeout:     socket timeout in senconds
+       config_file:     json format config file
 
-    info:
-                -m:  accept two encrypt methods, "table" or "rc4"
-                -f:  run in backgroud, with a valid path to the pid_file
 ```
diff --git a/utils.c b/utils.c
index f591a1a0..346460b1 100644
--- a/utils.c
+++ b/utils.c
@@ -10,12 +10,16 @@ void FATAL(const char *msg) {
 }
 
 void usage() {
-    printf("usage: ss  -s server_host -p server_port -l local_port\n");
-    printf("           -k password [-m encrypt_method] [-f pid_file]\n");
+    printf("usage:\n\n");
+    printf("    ss -s server_host -p server_port -l local_port -k password\n");
+    printf("       [-m encrypt_method] [-f pid_file] [-t timeout] [-c config_file]\n");
     printf("\n");
-    printf("options:\n");
-    printf("       encrypt_method:  table, rc4\n");
-    printf("       pid_file:        valid path to the pid file\n");
+    printf("options:\n\n");
+    printf("    encrypt_method:     table, rc4\n");
+    printf("          pid_file:     valid path to the pid file\n");
+    printf("           timeout:     socket timeout in senconds\n");
+    printf("       config_file:     json format config file\n");
+    printf("\n\n");
 }
 
 void demonize(const char* path) {