diff --git a/README.md b/README.md
index de4686df3..eff61366f 100644
--- a/README.md
+++ b/README.md
@@ -9,15 +9,15 @@ eMQTT requires Erlang R17+.
 ## Startup in Five Minutes
 
 ```
-	$ git clone git://github.com/slimpp/emqtt.git
+$ git clone git://github.com/slimpp/emqtt.git
 
-	$ cd emqtt
+$ cd emqtt
 
-	$ make && make dist
+$ make && make dist
 
-	$ cd rel/emqtt
+$ cd rel/emqtt
 
-	$ ./bin/emqtt console
+$ ./bin/emqtt console
 ```
 
 ## Deploy and Start
@@ -25,28 +25,77 @@ eMQTT requires Erlang R17+.
 ### start
 
 ```
-	cp -R rel/emqtt $INSTALL_DIR
+cp -R rel/emqtt $INSTALL_DIR
 
-	cd $INSTALL_DIR/emqtt
+cd $INSTALL_DIR/emqtt
 
-	./bin/emqtt start
+./bin/emqtt start
 
 ```
 
 ### stop
 
 ```
-	./bin/emqtt stop
+./bin/emqtt stop
 
 ```
 
 ## Configuration
 
-......
+### etc/app.config
 
-## Admin and Cluster
+```
+{emqtt, [
+   {auth, {anonymous, []}}, %internal, anonymous
+   {listen, [
+       {mqtt, 1883, [
+           {max_conns, 1024},
+           {acceptor_pool, 4}
+       ]},
+       {http, 8883, [
+           {max_conns, 512},
+           {acceptor_pool, 1}
+       ]}
+   ]}
+]}
 
-......
+```
+
+### etc/vm.args
+
+```
+
+-sname emqtt
+
+-setcookie emqtt
+
+```
+
+When nodes clustered, vm.args should be configured as below:
+
+```
+-name emqtt@host1
+```
+
+## Cluster
+
+Suppose we cluster two nodes on 'host1', 'host2', Steps:
+
+on 'host1':
+
+```
+./bin/emqtt start
+```
+
+on 'host2':
+
+```
+./bin/emqtt start
+
+./bin/emqtt_ctl cluster emqtt@host1
+```
+
+Run './bin/emqtt_ctl cluster' on 'host1' or 'host2' to check cluster nodes.
 
 ## HTTP API
 
@@ -55,13 +104,13 @@ eMQTT support http to publish message.
 Example:
 
 ```
-	curl -v --basic -u user:passwd -d "topic=/a/b/c&message=hello from http..." -k http://localhost:8883/mqtt/publish
+curl -v --basic -u user:passwd -d "topic=/a/b/c&message=hello from http..." -k http://localhost:8883/mqtt/publish
 ```
 
 ### URL
 
 ```
-	HTTP POST http://host:8883/mqtt/publish
+HTTP POST http://host:8883/mqtt/publish
 ```
 
 ### Parameters